Basic Research on Simultaneous Catalytic Removal of Diesel PM and NO_x over Mixed Metal Oxides

Basic Research on Simultaneous Catalytic Removal of Diesel PM and NO_x over Mixed Metal Oxides
　　Gasoline engine and diesel engine are two primary kinds of engines used in vehicles. The high efficiency, economy and durability of diesel engines have resulted in widely first choice for automobiles in recent years. However, the pollutants emitted by diesel engines have caused severe environmental and human health problems. The high PM and NOx emissions slow down the development of diesel engines. So the emissions control on diesel engines has been an important research topic in energy and environmental area.Nitrogen oxides (NOx) and particulate matters (PM) are the main harmful substances. PM and NOx are generated by the different mechanisms. The simple use of the control techniques in engine technology is not enough to reduce PM and NOx at the same time. The after-treatment technologies for reducing the emissions of both harmful substances should be developed.Basic research on simultaneous catalytic removal of diesel PM and NOx over mixed metal oxides Special shape NdFeB magnets was investigated in this paper. Diesel emissions condition was simulated by TPR (Temperature Programmed Reaction) technology with carbon black as substitute of PM. Using mixed metal oxides as catalyst, the simultaneous catalytic removal of NOx and carbon black (C) were realized via their redox reaction over the same catalytic bed. Several modern analyses were introduced to disclose the relationship between structure and activity of the catalysts and speculate the mechanism of the catalytic reaction. The detailed works are as follows:1. Mixture oxides which were based on rare metal oxides and loaded with potassium and transition metal have been investigated. The influences of the loading amounts have also been discussed. It was found that Nd2O3 was more active than the other rare metal oxides, and Chromium oxide was superior to the other transition metal oxides with respect to enhancing the activity of carbon black oxidation. The optimum level of Chromium was about 10 wt%, while the ignition temperature Ti was 250?C lower than pure Carbon-NOx (C-NOx) reaction. Mn-loading resulted in the biggest conversion efficiency of NO to N2. The formation of complex crystalline phase in the catalyst promoted the catalytic reaction of C-NOx.2. M(П)Al-HT (where M = Co, Mn and Cu) nanometer materials were prepared by conventional co-precipitation (the CP method) as precursors. And then two types of mixed oxides http://www.999magnet.com/ CoCuAlO (CAO) and CoMnAlO (CMAO) with the same meso-porous structure were prepared for investigating the influence of replace amounts of M on characteristic and activity. CAO and CMAO both showed effective catalytic activity on simultaneously removing C-NOx. Their activities raised first then dropped down along with the increasing of Cu or Mn replacement.
　　The CAO2 showed the best carbon catalytic combustion activity with Ti was 222?C. Meanwhile, CMAO1 showed the strongest catalysis on NOx with the maximum conversion rate XN2max up to 41%. Considered of simultaneity removing carbon and NOx, the remarkably catalytic activity of the CAO and CMAO were related to the micro-porous structure and the crystallite size of HT precursors.3. NiFe2O4 nano-particles with stably chemical properties and crystalline phase were synthesized by liquid catalytic phase transformation method at low temperature. The prepared nano-particles were characterized by XRD、BET and TEM. Simultaneous catalytic removal of C-NOx over NiFe2O4 nano-particles was investigated and compared with NiFe2O4 prepared by traditional method. It turned out that NiFe2O4 produced by both methods could promote carbon and NOx transferring to CO2 and N2 in tight-contact with carbon black. Liquid catalytic phase transformation method resulted in good activity for simultaneously catalytic removing carbon and NOx in the loose-contact with carbon black. The ignition temperature of carbon black was as low as 282?C, and the http://www.999magnet.com/ XN2max was 14.1%.Compared with the traditional method, NiFe2O4 nano-particles produced by liquid catalytic phase transformation method showed higher catalytic activity, which was kept well after calcined in high temperature. And it decreased the ignition temperature of carbon black remarkably.4. Effects of reaction conditions including carbon content, concentrations of inlet gas such as NO and O2, total flow rate, heating rate, contact conditions and reuse of catalyst were investigated over NiFe2O4 samples. Carbon content and total flow rate hardly affected the ignition temperature of carbon black, while NO and O2 concentration positively affected the catalytic activity. The contact between catalyst and carbon black was a very important factor for the catalytic performance. Although the catalytic activity decreased slightly, NiFe2O4 catalyst still kept high activity under loose contact. And it almost kept the same after reusing. Furthermore, the reaction mechanism of simultaneous C-NOx removal over NiFe2O4 was discussed based on the former researchers as well as the present experimental results.

Mg-Gd-Y Alloy Calphad, Experimental Varity and Application in the Navol Mg Alloy Development

Mg-Gd-Y Alloy Calphad, Experimental Varity and Application in the Navol Mg Alloy Development
　　The development of computation materials science impelled the advancement of materials design and become the main development directions of computation material thermodynamics. CALPHAD(Calcaluation of Phase Diagram) technology can forecast the products, transformation temperature and the phase fractions with different temperature, as well as provides the crucial theory instruction for the material preparation and the design of heat-treatment processing.Magnesium alloys have caused widespread attention of the astronautics, the aviation and the automobile industry, because of its excellent castability, machinability , bio-compability and high specific strength.
　　But its peer high-temperature mechanical Block Neodymium magnets properties limited the alloys application in loading-structure .So there is an urgent need for the development of high-strength magnesium alloys if we want to fully exploit the potential of this fascinating lightweight material. With the development of magnesium alloys, Mg-Gd-Y alloy system are of interest around the world because of their excellet high-temperature properties and good casting characteristics.However, the reports about phase diagram in this alloy is limited, specially for vertical phase diagram at present, the design of alloy component and heat-treatment processing is mainly completed by experiments. While experiments on developing a new alloys are expensive and time consuming.In this paper, the phase equilibrium computation theoretical model are introduced at first , and then the binaty phase diagram of Mg-Gd,Mg-Y,Gd-Y alloys and ternary Mg-Gd-Y system alloys in Mg-rich corner were calculated using Calphad software Pandat and the Mg alloy database. The phase equilibria and solidification sequences http://www.999magnet.com/ of the alloys Mg-5Gd-2Y,Mg-1Gd-7Y and Mg-xGd-4Y(x=1,9,15) were compared with the experimental results of SEM, SEM-EDS spectrum analysis and DSC curves. The results show that thermodynamics database of Pandat software is reliable and the thermodynamic calculated phase equilibria agree well with the experimental results.The phase diagram of Mg-Gd-Y-Zn-Zr alloy in Mg-rich corner was calculated using Calphad software Pandat. A new alloy of Mg-9Gd-3Y-0.6Zn-0.5Zr and its heat treatment process was designed under the guide of this phase diagram. The result shows that the phase diagram of Mg-9Gd-3Y-0.6Zn-0.5Zr is feasibility for the design of the heat treatment process in this alloy ,the heat treatment process for as-extruded Mg-9Gd-3Y-0.6Zn-0.5Zr is aging at 200℃for 63 hours and the tensile strength up to 430MPa.

First Principles Study of γ-Si3N4 Materials

First Principles Study of γ-Si3N4 Materials
　　Density function theory is applicable for the many-electron system by considering a single-electron system. The parameters such as binding energy、lattice constants、bulk modules calculated by density function theory of semiconductor and metal materials have shown to be in good agreement with the experimental results. As such, the first principles study of the condensed matter materials based on density function theory is being paid more and more attention. To date, a great deal of arithmetic based on density function theory, including LCAO-TB、OPW、PWP、LAPW and LMTO, etc. has been developed. With the development of the large、high-speed computers in recent years and report of a lot of experimental data, the first principles calculation has played a more and more important role in studying physical properties of materials and designing new types of materials.Si3N4 is an important structural ceramic with many applications because of its high decomposition temperature, outstanding oxidation properties, good thermal stress resistance, mechanical properties and optical properties. It has been extensively applied to micro-electronics, photoelectronics, mechanics, automobile, solar cells, and tools for ceramic cutting and processing. Two stable phases of Si3N4,αandβ, Block neodymium magnet have thus far been synthesized. The third phase of Si3N4 in the cubic spinel phase (γ-Si3N4) could be synthesized under high pressure above 15 GPa and at a temperature exceeding 2000 K. To date, much work has been focused on computer simulation to study structure and properties of such structure.
　　Especially in recent years, first-principles calculations based on density-functional theory (DFT) have been successful in predicting crystal structures and properties of material. As such, the first-principles calculation is a good method to investigate the materials difficultly synthesized in experimentIn this thesis, we calculated the electrical structure and physical properties ofγ- Si3N4 at zero pressure、high pressure and with doping by the first principles calculation based on PWP. The main research work is divided into three parts:1. Electronic structures, optical and mechanical properties ofγ-Si3N4 have been calculated by means of plane-wave pseudo-potential method (PWP) with generalized gradient approximation (GGA) and local density approximation (LDA). The calculated values were in good agreement with experimental results. The comparative investigation revealed that the band gap calculated by GGA agreed better with the experimental value than by the other methods, while the calculated bulk modulus by LDA is comparable with that by orthogonalized linear combinations of atomic orbitals method (OLCAO). Our results indicated that the satisfactory calculation on the structures and http://www.chinamagnets.biz/ properties ofγ-Si3N4 could be given by combining GGA and LDA methods.2. The pressure-dependent electronic structures and physical properties ofγ- Si3N4 have been calculated by means of plane wave pseudo-potential method (PWP) with GGA-PW91. Based on the calculations above, we analyzed the influence of pressure on the optical and mechanical propertiesγ-Si3N4, which indicates thatγ-Si3N4 is quite suitable for the application under high pressure.3. The crystal structures, electronic structures, and optical properties ofγ-Si3N4 doped with La are studied using the plane wave pseudo-potential method (PWP) based upon the density functional theory with Perdew-Wang 91 (PW91) generalized gradient approximation (GGA). The calculated band gap of dopingγ-Si3N4 was found to significantly decrease after introduction of La. The band structures ofγ-Si3N4 behave like semiconductor for low La concentration and metal for high La concentration. The calculated optical properties showed that the static dielectric constant ofγ-Si3N4 doped with La is much higher than that of undopedγ-Si3N4, so it may act as new dielectric and refractive material.

The Study of Photocatalytic Activity and Modify of Nano Titanium Dioxide Powder

The Study of Photocatalytic Activity and Modify of Nano Titanium Dioxide Powder
　　The titanium dioxide nanopowders were prepared with tetrabutyltitanate (TNB) as raw material by the sol-gel process.The samples were characterized by mean of TG-DTA, XRD, SEM, IR and FS techniques respectively. The effects of the ratio of reaction material, the pH value of reaction system, the stiring velocity, the total material volume, the hydrolyze temperature, the dried ways of the wet gel and the calcined temperature of the dry gel were discussed on the particle size, particle size distributing, the composing of crystal phase and the photocatalytic property Ball Neodymium Magnets by the experimental design. The most suitable praparation conditions should controlled as follows: hydrolyze temperature was about 20-30℃; the ratio of TNB and water and solvent was 1:4:15; the pH value of reaction system was 2; the stiring velocity was 300r/min; temperature would be increased slowly and length by length in the dry process; the calcined temperature was about 400℃.The product was anatase TiO2 and its mean dimention was about 8nm.The transition metal ions such as Mn2+, Fe3+, Cu2+ and the rare earth element metal ions such as Y3+ and La3+ were selected with different ratio doping in TiO2 to study the photocatalyst modifying in this paper for the sake of improving the quantum-sized efficience of photocatalitic reaction of nano-TiO2. The samples were employed as catalysts for phenol photocatalytic oxidation degradation in aqueous suspension, used as probe reactions.
　　The experiments showed that doping could improve the photocatalytic activity of nano-TiO2 efficently and the improving of photocatalytic activity were quantitatively correlated with the factors such as metal ion radii, their electronic configuration, the oxide and reduce potential and the dopant concentration. Iron-doped nano-TiO2 showed the best catalytic efficence when the moral ratio was 0.5% under the experimental conditions in this paper.Others,TiO2/FeMnCuO4 composite photocatalyst was studied ,but obvious improving of photocatalytic activity was not be found in the experiments of degradation phenol.The phenol of photocatalytic degradation was affected by many factors. In this paper, react conditions included intensity of light, pH value of solution , concentration http://www.chinamagnets.biz/ of calalyst , initio concentration of phenol solution and air quantity of aeration were modified to study the influence of degradation of phenol.The result indicated that efficience of degradation was best when pH value of solution was 9 and concentration of calalysts was 2.50g/L. The efficience was more high when the initio phenol solution concentration was increased on the condition that the concentration was below 70mg/L.The quantum-sized effect and modifying effect were studied by model chemistry method with ab initio and DFT theory to probe the relationship between the micro structure of TiO2 and photocatalytic property. The calculation by selecting cluster model with different size showed that the quantum-sized effect was more prominent with the decrement of model size and the energy distance was bigger near Fermi energy level. The calculation of transition metal ions doped model indicated that energy levers of impurity were brought in by doping. It led to red shift of absorption light and the absorption frequency of spectrum of annatise TiO2 was extended. It was also one reason that photocatalytical activity was capable of improving efficiently by doping of the transition metal ions.

Formation and Mechanisim of Up-Converting Matrix Phosphors

Formation and Mechanisim of Up-Converting Matrix Phosphors
　　Up-converting fluorescent nanocrystalline is a sort of material emits short wavelength light after excitated with long wavelength light. Most of them are attributed to inorganic material, for example, ytterbium and erbium co-doped yttrium fluoride, sodium yttrium fluoride, lanthanum fluoride, etc. Up-converting fluorescent material can emit different color visible fluorescence after excitated with 980 nm infrared light.Up-converting nanoparticles with few background and high detective sensitivity are a promising bio-molecule label. Until now, ytterbium and neodymium magnets erbium co-doped sodium yttrium fluoride (NaYF4: Yb, Er) is among the most efficient up-conversion phosphors. Its potential application in biological and medical fields has interested many scientists. As bio-molecule fluorescent labeling material, nanoparticles with small diameter, uniform distribution and strong luminescent intensity are necessary.
　　Considering the application in practice, the size of the fluorescent nanoparticles was dominated by the original diameter of the matrix material. Therefore, if the smaller and uniform matrix nanoparticles could be synthesized, that should be significant for research of the material applied in bio-molecule label.Based on the similarity of rare earth elements, this work focus on studying the formation mechanism and reaction affecting factors of NaYF4 nanoparticles without doping in aqueous phase, The obtained results are described as follows:(1) By investigating the effect of reactant time evolution and seeding effect for the formation of NaYF4 particles, the result that NaYF4 nanoparticles synthesized in aqueous grew in aggregation model, but not the typical LaMer model was concluded.(2) Reactant factors of reactant materials pH and chelators of EDTA for affecting the synthesis of NaYF4 nanoparticles were studied. Y(ClO4)3 was helpful for getting smaller NaYF4 particles than YCl3 was found. Particles remained almost unchanged, when pH of the aqueous phase was in the range of 4-10. The http://www.chinamagnets.biz/ molar ratio of chelators to yttrium and the amount of fluorin ion should be in a proper range so that small nanosized particles can be obtained. In this paper, under the condition of [EDTA] : [Y3+] = 1 and [NaF] = 0.5 mol/L, NaYF4 of 30 nm was synthesized by Y(ClO4)3.(3) NaYF4 nanocrystalline was prepared in the presence of chelators such as EDTA, Na-NTA, Na-Citrate. Nanoparticles of 12 nm were obtained by 0.12 mol /L Na-Citrate. Thereout, comparison of amino carboxyl chelating and hydroxy carboxylic chelating affecting the synthesis of NaYF4 was studied.(4) Up-converting nanocrystal material of ytterbium and erbium co-doped sodium yttrium fluoride (NaYF4: Yb, Er) with 10 nm was achieved in the presence of high concentrated Na-NTA.

Finite Element Analysis and Research on PM Motor Rotor Mechanical Design

Finite Element Analysis and Research on PM Motor Rotor Mechanical Design
　　The mechanical calculation and design on PM motor is always performed after electrical design .In order to match the electrical design, the size is neodymium rare earth magnets usually designed so weak that the motor can not work normally .This paper concerns a mechanical invalidation of rotor on a motor .Through the 2-D finite element analysis on the rotor of the PM motor, some valuable results are gained.Five parts of this thesis are included as follows:At first, the theories of elasto-plasticity including mises yielding criterion, loading condition are presented as the basic theories.Second, the application of FEM are stated, including the basic method and the basic analysis process as well as the variation principle and Ritz method. Some formulas of; numerical analysis on elasto-plasticity mechanics are also deduced here.Third, some of the basic concepts and principles relating to contact finite element analysis are presented. On the basis of the known research on the intensity of the rotor, the nonlinear contact finite element analysis is suggested. The analysis process and basic theory on FEA are importantly stated as the guideline to make the solve of analysis more approximately to the real http://www.chinamagnets.biz/ case.Forth, the static analysis finite element models of a rotor including nonlinear contact are set up by understanding the underlying theory. Based on the FEA software ANSYS, the rotor’s stress and radial shift are acquired by 2-D coupled-filed FEM, with the consideration about coupled electromagnetic-mechanical problems. The improvement of rotor is also obtained from the analysis.At last, an experiment is designed to proof the FEA to be reliable.

Research of HCB Novel Motor Operating Mechanism

Research of HCB Novel Motor Operating Mechanism
　　For high voltage circuit breaker, operation mechanism should fast response and have high opening and closing speed. Hydraulic mechanism and spring mechanism are used widely nowadays. But they are making up of complicated mechanism assembly, and parts is more, actuating mechanism complex, manufacturing technique requires higher, and moving procedure is uncontrolled. So, it is necessary for researching an operation mechanism with fewer parts, more rare earth magnets simple construction, and moving procedure is controlled.In this paper, we analyzed the demand of novel motor operation mechanism and its driving motor for circuit breaker, compared the characteristics of different kinds of motors. The permanent magnetic brush-less motor is chosen as the driving motor of motor operation mechanism. According to the defects of existing operation mechanism, motor operation mechanism is designed for 40.5kV vacuum circuit breaker with which the model number is TD-40.5/1600-31.5. The relationships between the motor striking angle and contact stroke, the equivalent rotary inertia and counterforce characteristics during the motion of motor are gained after calculating the moving characteristics of motor operation mechanism.
　　The preinstall stroke course of contactor is given according to the parameter of arc-chute. Calculate the dynamic characteristics of the circuit breaker as moving contactor moving with preinstall stroke course, the design standards of electric motor is given according to it. The permanent magnetic brushless DC motor is improved reference the properties of short moving stroke, big counterforce and higher speed requirement and so on of CB operation mechanism, then the permanent magnetic brushless DC motor with finity rotate angle is designed. Not only the features of http://www.chinamagnets.biz/ quicker responding and bigger torque of rare-earth permanent magnetic brushless DC motor are reserved, and the defect of commutating spark and structure complex of DC motor is overcomed due to the electronic commutation, meanwhile, the features of no excitation loss and high efficiency of permanent magnetic motor are acquired and the motor structure is no commutation, more simple and control easier. The designed motor are simulated by using finite element software. The results indicate that the design is reasonable and performance is reliable. And data processing method are adapted to analysis dynamic characteristics of motor operation mechanism.The analyzed results indicate that the motor operation mechanism are of high response, short opening and closing time, quick speed of opening and closing. It is not only fit for the capability requirement of circuit breaker, but also can improve the opening and closing capabilities of circuit breaker. The moving course can be controlled easily, and the intelligentize operation are realzed. The structure of novel motor operation mechanism is much simple. It is significance to improve the intelligence level by means of adding the servo control of motor to overcome the uncontrolled property.

Research of New Gearless Traction Pumping Unit

Research of New Gearless Traction Pumping Unit
　　One of focus points that study the energy-efficient field of pumping unit is the low speed electric motor which does not need the low speed organization direct drive. This kind of research of the pumping unit of organization has important scientific meaning and practical value. Domestic for this kind of pumping unit is in yet to start stage.This paper has analyzed the mechanical structures of novel gearless traction pumping unit, according to technical index and the major function Segment neodymium magnet of the system of pumping unit, also introduced the technical requirements of low speed and high torque PMSM. This generator supplies power with the SPWM power source of frequency conversion directly drives the drag of driving sheave to draw sucker rod and matches weight, being completed to take out oil demerit.
　　This generator which does not need mechanical deceleration organization can make new the mechanical structure of novel gearless traction machine of pumping unit become very simple, have alleviated heavy daily maintenance work greatly, and increase systematic reliability considerably. Since having not slowed down structure, organization has no corresponding mechanical wastage, has raised systematic mechanical transmission efficiency greatly. On the other hand, because use high efficiency PMSM, the generator has reduced generator wastage and also enhanced the system overall efficiency.This paper uses Matlab calculation software establishment program to calculate the design scheme of oil field pumping unit with the 20kW low speed and high torque PMSM, http://www.chinamagnets.biz/ then applies the Maxwell 2D two-dimensional finite element analysis software of electromagnetic field to carry out the analysis of magnetic field for PMSM, and has analyzed them in no load turn over electromotive force and the magnetism of air gap dense.This paper adopts electromechanical integration design for the control system of pumping unit of frequency conversion, PLC is the control core. This design realizes motor frequency control through control frequency converter. This paper has studied the motor control pattern of rotational speed, solved the mechanical impact problem in the inverting of pumping unit, and reduced mechanical wear. The PID closed-loop control for frequency conversion control system of pumping unit has been designed for realizing stroke, rush and about stroke time continuously adjustable in specified scope, this makes the pumping unit apply to the different operating mode oil well.The modeling and the simulation has been carried out to the novel gearless traction type pumping unit control system. The simulation result indicates that the model establishment is correct, the control method is feasible, these have offered good theoretical basis for this generator control systematic hardware parameter designs.

Preparation and Properties of Silicate Long Afterglow Phosphors

Preparation and Properties of Silicate Long Afterglow Phosphors
　　In this paper, the current situation, development, characteristic of phosphors, preparation and application prospect of phosphorescence system of silicate were summarized.In the paper, the long afterglow luminescent material of Sr2MgSi2O7 was prepared by sintering at high temperature under the reductive atmosphere. The photoluminescence spectra were recorded on F-4500, XRD patterns of the samples were measured by the X-ray powder diffraction analytical instrument. The relationship between contents of Eu, Dy, B and luminescent Cylinder neodymium magnet properties have been studied, obtain a recipe used for good performance silicate phosphor. Factors influence luminescent properties, such as sintering temperature, sintering time, diameter of SiO2 power are investigated. A blue silicate long afterglow power is prepared by using solid reaction method. The initial luminance of the sample is 3000 mcd.m-2 and the decay time is 30 h. A phosphor of Sr2MgSi2O7:Eu2+,Dy3+ was synthesized by sol-gel method at the temperature lower than the tradition solid state reaction about 150℃. The phosphor synthesized by solid reaction exhibited a better afterglow character than the phosphor obtained by the sol-gel method, due to a higher trap concentration which was formed by a higher reaction temperature.In the paper, the synthesis and phosphorescent properties of the long lasting phosphorescent glass have been researched. samples were prepared with two methods.Glass 1G were prepared by the traditional ceramic synthesis method at 1300°C for 2h and in reductive atmosphere (one step method), Glass 2G was prepared by sintering the mixture of the powder of glass host and long lasting http://www.chinamagnets.biz/ phosphorescent powder (two step method). Blue long lasting phosphorescent glass(2G) was prepared by sintering the phosphorescent powder of Sr2MgSi2O7:Eu2+,Dy3+ and glass host at the temperature of 1000℃1100℃maintained for 8min12min under air atmosphere. The initial luminance of the 2G is 400 mcd.m-2 and the decay time is 2 h.

Study on Preparation and Characterization of Biodegradable PLA-Based Nanocomposites

Study on Preparation and Characterization of Biodegradable PLA-Based Nanocomposites
　　The exploration and application of degradable polymer have become one of the most effective solutions for petroleum-based plastic waste problem. Thereinto, poly(lactic acid)(PLA) have many merits such as excellent biodegradability, processability, simple manufacture flow and have become the main product among degradable polymers. Aimed at the problems of the application of PLA such as: low toughing(belongting to brittle fracture), dispropotion between strength and toughing, PLA with high molecular weight difficult to biodegrade and so on, Cube neodymium magnet this paper is concentrated on the modification of PLA and the prepatation of PLA-based nano-composite,whose properties not only reach to the balance of strength and toughing, but also statisfy the utilization demand from the view of mechanical properties. Moreover, the sysmatic research is performed on the effect of components of PLA-based nano-composite on its mechanical properties, microstructure and biodegradability.PLA/modified organo-montmorillonite (PLA/OMMT) nanocomposite is prepared through melt-intercalation on the single-screw extrusion machine. La-OMMT is obtained through exterior treatment by rare earth oxide(La2O3),
　　which improve the compatibility and interfacial binding between OMMT and PLA. PLA/La-OMMT nanocomposite is attained through melt-intercalation, and then is plastisized by plastisizer. The effect of the content of OMMT, the effect of the type of OMMT, the effect of the weight ratio of La2O3 and OMMT, the effect of the content of La-OMMT, the content of plastisizer and the type of plastisizer on the mechanical properties of PLA-based nanocomposite are investigated. The results conclude the suitable type of OMMT and plastisizer, moreover, their optimal content in PLA-based nanocomposite.The microstructure of PLA-based nanocomposite is studied through SEM,XRD and TEM, which provide direct intuitionistic interpretation for mechanical properties of PLA-based nanocomposite. Besides, the mechanism of enhancing strength and toughing of PLA-based http://www.chinamagnets.biz/ nanocomposite is discussed. The results indicate that La-OMMT, which is mainly exfoliated in nanocomposite, play a role in enhancing strength, meanwhile, PEG improve the toughing of nanocomposite. The integration of strength and toughing broaden the field of the application of PLA.The biodegradable behavior and biodegradable mechanism of PLA-based nanocomposite with good mechanical properties are studied in this paper. Under the biodegradation of the microbe from activated sludge and soil cultivated liquor,respectively, the change of Weight loss, viscosity molecular weight of PLA-based nanocomposite versus time are studied, and the configuration before and after biodegradation are observed through SEM. Furthermore, the effect of the addition of nanoparticle La-OMMT and hydrophilic PEG on biodegradability of PLA-based nanocomposite are discussed, which show that this two component quiken the biodegradation of PLA-based nanocomposites.

The Study on Process and Corrosion Resistance of Chrome-Free Dacromet Coating

The Study on Process and Corrosion Resistance of Chrome-Free Dacromet Coating
　　Chrome-free dacromet is a corrosion-resistant coating to metal substrate containing flake zinc and aluminum. It is formed by dip-drain, brush or dip-spin technique, and readily cures at elevated temperature.The composition of coating was optimized by studying parameters of coating preparation and effects of silanes, rare-earth and thikening agents. High corrosion resistant chrome-free dacromet was obtained. It was found that addition of silanes Cube neodymium magnet had obvious effects on stability of solution, adhesion and corrosion resistance. Comparing with them, the best proportion and quantity were gained. Ce(NO3)3, La(NO3)3 were studied, and the results showed that they could enhance the corrosion resistance of coating. Comparing four thickening agents’effects on properties of coating, the proper agents and contents were chose to obtain standard thickness. Besides, electrochemical tests were done to describe corrosion behaviors of Zn in 3.5% NaCl and B515 solution adding different inhibitors.
　　Properties of coating were tested. The results showed that sodium tungstate, methenamine and zinc dihydrogen phosphate can slow corrosion rate of chrome-free coating. Zinc dihydrogen phosphate is the best choice.The composition and structure of chrome-free dacromet coating were studied by means of microscope、XRF、SEM and EDS. Salt immersion test, ammonium nitrate tes, salt spray tests, polarized resistance, electrochemical impedance spectroscopy (EIS) were conducted to investigate the corrosion behavior of chrome-free dacromet coating. http://www.chinamagnets.biz/   The reasons of high-resistance to corrosion were analyzed. Meanwhile, chrome-free dacromet’s anticorrosive process and mechanism were discussed in the paper. The coating corrosion was divided into four phases: the infiltration of media corrosion, corrosion product deposition, corrosion rate and diffusion process had reached steady-state, matrix and the coating was damaged. Coating on the substrate protection includes four areas: barrier, electrochemical protection, passive and self-repair.

Geochemical and Tectonic Evolution of Mesozoic Volcanic Rocks from Yindaosi Area in West Segment of North Qinling Mts. and Late Proterozoic Volcanic Rocks from Xinglongshan Formation in Eastern Qilian Mts.

Geochemical and Tectonic Evolution of Mesozoic Volcanic Rocks from Yindaosi Area in West Segment of North Qinling Mts. and Late Proterozoic Volcanic Rocks from Xinglongshan Formation in Eastern Qilian Mts.
　　Based on the former data, field investigation and major samples analysis and study, this paper emphasizes particularly on geochemical and tectonic evolution of Mesozoic volcanic rocks from Yindaosi area in west segment of North Qinling Mts., and Late Proterozoic volcanic rocks from Xinglongshan Formation in Eastern Qilian Mts., by means of geochemistry, regional geology, tectonic geology, petromorphology, isotope chronology and microphysiography. The purpose is to determine their age, identify their petrogenesis and geotectonic setting, and clarify the relationship between the petrogenesis and tectonic environment. To study on the two groups volcanic rocks provided us important information for discussing the basic characteristics of Chinese continental orogenic zone and continental dynamics mechanism.Through the study, new findings are Special shape NdFeB magnets  as following:1. The results of U-Pb zircon La-ICPMS dating for volcanic rocks from Yindaosi area in west segment of North Qinling Mts. and the petrography study are as follow:The results of U-Pb zircon La-ICPMS dating for volcanic rocks from Yindaosi area in west segment of North Qinling Mts. and the elements geochemistry study show that Yindaosi rhyolite is 211±2.6Ma, at the later Indo-Chinese epoch.As a whole, the element geochemistry characteristics of this rhyolite are following.(1) High SiO2, Na2O + K2O and low TiO2, and it belongs to sub-alkali series.(2) LREE enriched, distinct negative abnormity on Eu, and the primitive-mantle normalized trace element patterns is of the intraplate, with the markedly depletion on Ba, Sr, P and Ti.(3) The traits of Pb isotope show that the source region of Yindaosi rhyolite is the basement rocks in the North Qinling Mts., which are produced by the partial melting earth’s crust. The comparison of Chondrite-normalized patterns of REE and the primitive-mantle normalized trace element patterns suggests that the matter in the source region may be biotite- hornblende-anorthose gneiss of Paleoagnotozoic Qinling Group. The residue may be mainly plagioclase, containing hornblende, and the limited separate crystal of alkalic feldspar and biotite existed in the magma process.(4) Combining the specific conversion tectonic setting in Indo-Chinese epoch with certain faults in the Yindaosi area in west of North Qinling Mts., the rhyolite magma erupted particularly in the region.2. The results of U-Pb zircon La-ICPMS dating for volcanic rocks from Xinglongshan Formation in Eastern Qilian Mts. and the petrography study are as follow:(1) Xinglongshan Group consisting mainly of detrital rocks and basic volcanic rocks, which can be divided into lower, middle and upper formations.
　　The result of U-Pb zircon LA-ICPMS dating for upper formation basic lava is 713-824Ma, together with the regional geological characteristics, we suggest that Neoproterozoic is the formation age of Xinglongshan Group.(2) Based on petrographic, major and trace element data, the lower formation of basalt or basaltic and middle and upper formations of basic volcanic rocks of Xinglongshan Group are different distinctly. The former exhibits LREE enriched, http://www.999magnet.com/  distinct Nb-Ta ant Ti depletion in trace element patterns. The latter with LREE depleted and HREE enriched, their primitive-mantle normalized diagram show a“flat-type”patterns. The Xinglongshan Group volcanic rocks are dominantly tholeiitic in composition.(3) The parent magma of Xinglongshan Group basic volcanic rocks subjected to shallow level gabbroic (palg+cpx[±ol]) fractionation. The basic lavas in the lower formation occurs within plate rift setting, and crustal contamination has also contributed significantly to the formation of the basalt. In contrast, the middle and upper formation form in initial oceanic basin setting(4) The basalt or basaltic in the lower formation with En(composition enriched), exhibits approximate mantle plume in asthenosphere subjects crustal contamination in the process of uplifting , mainly forming in the primitive garnet stability field. The basic lavas in the middle, upper formation derived from depleted mantle source similar to N-MORB in inspinel-iherzolite stability field.(5) Xinglongshan Group is the response of the evolvement history in eastern Qilian orogenic belt of continental extension-continental rift development-formation of initial ocean basin, after the formation of Rodinia Supercontinent.

Research on Alleviation of Cadmium and Copper Stress on Carassius Auratus by Cerium and Lanthanum

Research on Alleviation of Cadmium and Copper Stress on Carassius Auratus by Cerium and Lanthanum
　　Physiological and biochemical indicators and Fourier transform infrared spectroscopy were used to research the alleviation effects of lanthanum and cerium to cadmium and copper, as well as the interactions between them using carps as materials. The antioxidant enzymes system, the structure and metabolism of lipids, protein and nucleic acid of carp liver were analyzed.Using of lanthanum and cerium, the poisoning symptoms by Cd and Cu was alleviated. The results showed that: the antioxidant activity was raising, the ability to eliminate free radicals enhanced, the MDA content decreased. It is suggested that: higher concentrations of rare earth elements may not be Special shape NdFeB magnets  able to play a bigger effect to carps and it requires a combination of time and reasonable dosage.Molecular structure and metabolism of liver cell were analyzed by the fourier transform infrared. Protein metabolism decreased under the stress of Cd and Cu. Structure of turn andα-helix of secondary structure of protein were vulnerable to Cd stress and were easier to change.
　　The lipid metabolism was more vulnerable to stress of Cu. The alleviation ability to Cd and Cu of La is better than Ce.Nucleic acid and amide II of liver cell were analyzed by the infrared spectrum fitting rate. It is suggested that La plays the same role as Ce and the infrared spectrum fitting rate of nucleic acid and amide II do not show some changes. It indicates that the alleviation of cadmium and copper stress on carps by cerium and lanthanum are not obvious on the metabolism of nucleic acid and protein.The results showed that the appropriate concentration of La and Ce can http://www.999magnet.com/ alleviat the cadmium and copper stress on carps. The infrared spectral analysis showed that the Fourier transform infrared spectroscopy(Fourier transform infrared spectrometry, FTIR) can be used to detecte the metabolism of macromolecular material of fishes when their living environment changs, it has a potential value of the wide range of applications.

Basalt and Rhyolite Association in Eastern Bogda: The Structural Dynamic Significance

Basalt and Rhyolite Association in Eastern Bogda: The Structural Dynamic Significance
　　Bimodal volcanic rocks are a volcanic suite lack of intermediate rocks,and the composition discontinuity is called Daly gap.Bimodal volcanic suite of the Xiaohongliu Valley is composed of basalt and rhyolite,and SiO2 content exhibits a gap between 47.16%and 76%.The basalts belong to tholeiitic series with high Na2O and lowK2O (K2O/Na2O=0.04-0.2),and TiO2 content(1.66%-1.71%)is similar to MORB.The rocks are slightly enriched in LREE(LREE/HREE=1.16-1.21,(La/Yb)N=1.79-1.91)with weakly Eu positive anomalies(δEu= 1.07-1.12,average is 1.09),and the fractionation of HREE is not obvious((Gd/Yb)N=1.05-1.16).The trace elements are characterized by enriched HFSE and depleted LILE.The rhyolites belong to calc-alkaline Block Neodymium magnets series with high Si,K2O+Na2O contents(SiO2=76%-79.76%,K2O+Na2O=6.08%-7.58%)and low TiO2 content(TiO2=0.168%-0.228%,average is 0.22%).
　　The trace elements are characterized by high∑REE,enriched LREE,obviously Eu negative anomalies(δEu=0.17-0.2,average is 0.18)and the fractionation of HREE is not obvious((Gd/Yb)N=1.59-2.21).The PM-normalized spider diagram shows the content of trace elements is high with enrichment in strongly incompatible elements and intensive depletion in Sr,P,Ti.Sm-Nd model ages of the basalts are from 645±18 to 699±16Ma, and(143Nd/144Nd)0 andεNd vary within 0.512603-0.512618 and 5.63-5.89.The Rb-Sr isochron age of the rhyolites is 296±2Ma,(87Sr/86Sr)0 is from 0.70432 to 0.70522.The isotopic characteristics indicate that the basalts are derived from a depleted mantle,and the rhyolites are originated from the partial melting heated by contemporaneous intrusion of basaltic magma.Under the extension setting,the bimodal volcanic rocks are formed by the eruption of basic and acid magmas.The discovery of bimodal volcanic rocks in Xiaohongliu Valley shows that the Bogda rift,initiated in middle early-Carboniferous and accompanying with subduction of the Mailakeli-Takezhale oceanic basin and expansion of the south continental margin of Junggar plate, http://www.999magnet.com/  developed to the climax in late- Carboniferous.The crust thickness (16-19km)and extension speed(2cm/a-5 cm/a)suggest the fast development of Bogda rift.The closure and collision of Bogda rift happened about 307.1±1.3Ma and creat the regional uplift,the transitional period from collision and compression to stretching and extension is 298.4±0.76Ma,and from then on,the Bogda orogen entered the post-orogenic stage.The finding of Taersu ore indicates that the minerogenic conditions are mature,and copper ore related to bimodal volcanic rocks and copper and gold deposits related to quartz reef in the region could be a new ore-prospecting strategy.

Elemental Features of Geogas over Polymetallic Deposits and Its Significance for Mineral Exploration in Qilian Basin, Qinghai

Elemental Features of Geogas over Polymetallic Deposits and Its Significance for Mineral Exploration in Qilian Basin, Qingh
Geogas survey, which emerged at the end of the 20th century, is a new geochemistry method and technique for concealed mineral deposits in geochemistry.Many Exploration geochemistrists has paid much attention to this new method because of its possibility of being widely used in the future. This paper mainly organizes and analyzes geogas observation data in Black River Basin in Qilian, Qinghai province in recent years (Bailiugou in 2004, binggou in 2005, fuomisi in 2006). In order to provide theoretical bases for anomaly interpretation and to raise anomaly interpretation level, this Neodymium Magnets paper trie　　Elemental Features of Geogas over Polymetallic Deposits and Its Significance for Mineral Exploration in Qilian Basin, QinghaiElemental Features of Geogas over Polymetallic Deposits and Its Significance for Mineral Exploration in Qilian Basin, Qinghai s to find the relationship between geogas anomaly and different geologic body especially deep orebodies by making comparisons between the elements’ characteristics of VMS deposits’ anomaly area and the elements’ characteristics of background area.It can be concluded:1. After the long-term bid in recent years,obversational accuracy has been improved, especially in the area such as the blank control, the capacity to catch metals, and reproductivity of geogas observation.2. According to the suvey data inBlack River Basin, the writer discovered the regularity of multi-element geochemical anomaly and the similarities between element association and known orebodies.
　　This implies that there is the possibility of large-scale polymetallic mineralization of in this area.3. According to the consequences of factorial analysis, the elements in geogas are obviously related to one another. Polymetal factpr and gold factor and ore-enchiching element are consistent with each other, and it demonstrate that the two has causal relation.4. Ore and wall rock are obviously different from each other and ore contains less proportion of REE. But in geogas anomaly area and in background area, the geogas’ distribution model of REE is similar. This distribution model belongs to light REE enrichment model and most of it has Eu loss. However it is strange that in anomaly area geogas’ REE content is higher and changes in a large scale. The reason is that it may be relevant to the geogas genetic types.5. According to the survey in wall rock, ore, and geogas trace elements spider, in the survey area geogas anomaly area and geogas background area ’s distribution model is similar, so http://www.999magnet.com   it is difficult to differentiate anomaly area’s sample and background area’s sample. But from the proportion of elements point of view, element content in anomaly area is higher than background area, which is just contrary to the content of wall rock and its reason is still under study.6 According to wall rock, ore, geogas mineralized element spider, the distribution model of geogas anomaly area and geogas background area has large disparity. Geogas anomaly element content is high and is near ore’s distribution model, especially Cu, Zn , Ag, Pb is rich. All this proves that geogas anomaly element may come from deep orebodies.7. In guomisi geogas, Zn ans Cd has notable positive correlation. According to Zn/Pb-Cu/Pb ratio chart, the samples in anomaly area and background area can be clealy divided. Thus geogas element assemblage ratio can be used in anomaly interpretation.

2，2’-联吡啶-3，3’-二甲酸配合物的合成、结构及性质研究

2，2’-联吡啶-3，3’-二甲酸配合物的合成、结构及性质研究
　　It has been the hot research field to construct metal-organic coordination polymers with high orderly structure from organic ligands and metal ions in coordination chemistry, supramolecular chemistry and material science. The increasing interest in this field is justified not only by the particular beauty and intriguing structural diversities of the architectures, but also by their potential application as functional materials in optoelectronic, magnetic, catalytic and inclusive fields. The selection of multifunctional organic ligands and metal ion is crucial to the construction of desirable frameworks. It is of great importance to study of the relationship between design, structure and strong magnets property and establish proper synthetic strategies and rules leading to desirable supramolecular systems through controlling the assembly process of metal-organic frameworks. In this dissertation, 2,2’-bipyridine-3,3’-dicarboxylate was selected as the first ligand to synthesize eighteen new coordination two-dimensional or three-dimensional polymers through solution reactions with 2,2’-bipyridine, 1,2-di(4-pyridyl)ethylene as the second ligands.
　　Their crystal structures were characterized and properties were discussed.1. Nine new complexes(1-9) has been designed and synthesized with transition metal ions in solution reactions, [Zn(bpdc)(H2O)2]n (1), {[Cd(bpdc)(H2O)3]·2H2O}n (2), {[Co(bpdc)(H2O)3]·H2O}n(3), {[Co(bpdc)(H2O)3]·(dpe)0.5·(H2O)}n(4), [Mn(bpdc) (H2O)4]n (5), {[Mn2(bpdc)(2,2’-bpy)3]·(ClO4)2·(H2O)3}n (6), [Cu(bpdc)(H2O)2]n (7), [Ag2(bpdc)]n (8) and {[Mn(bpdc)(dpe)]·(CH3OH)·(H2O)2}n (9) (H2bpdc = 2,2’-bipyridine-3,3’-dicarboxylate acid, dpe=1,2-di(4-pyridyl)ethylene). Among of them, complexes (1)-(6) are one-dimensional chains, complexes (7)-(9) are two-dimensional networks. X-ray structural analysis revealed that 2,2’-bipyridine -3,3’-dicarboxylate acid has been found seven different coordinated modes. In addition, complexes 1 and 2 exhibit intense blue photoluminescence. The magnetic behaviour of complexes 3, 4, 5, 7 and 9 were studied and indicated the existence of antiferromagnetic interactions.2. Eight three-dimensional mixed metallic polymers were http://www.chinamagnets.biz/ synthesized by 2,2’-bipyridine-3,3’-dicarboxylate acid with transitional and lanthanide metals. {[CoNd2 (C12H6N2O4)3(NO3)2(H2O)8]·(C2H6O)(H2O)}n (10), {[NiTb2(C12H6NO4)3(NO3)2 (H2O)8]·3.0(H2O)}n (11), {[NiGd2(C12H6N2O4)3(NO3)2(H2O)8]·(C2H6O)·2.5(H2O)}n (12), {[NiSm2(C12H6N2O4)3(NO3)2(H2O)8]·2.5(H2O)}n (13), {[NiNd2(C12H6N2O4)3 (NO3)2(H2O)8]·3.5(H2O)}n (14), {[NiLa2(C12H6N2O4)3(NO3)2(H2O)8]·4(H2O)}n (15), {[CoSm2(C12H6N2O4)3(NO3)2(H2O)8]·3.5(H2O)}n (16), {[ZnLa2(C12H6N2O4)3(NO3)2 (H2O)8]·2(H2O)}n (17). The magnetic behaviours of complex 10 were studied andindicated the existence of antiferromagnetic interactions.3. The three-dimensional compound, {Na[Mg(H2O)6][Cu2(C12H6N2O4)2(N3)3]}n,has been synthesized and characterized with transitional and primary metal in solution. X-ray structural analysis revealed the azido ligand has exhibited the two bridged modes of EO and EE. The three-dimensional structure is bridged by double end-on (EO) and single end-to-end (EE) azido bridges. Magnetic measurement indictates antiferromagnetic coupling.

The Spectrophotofluorimetry for the Determination of the Coenzyme and Primary Amines Compound

The Spectrophotofluorimetry for the Determination of the Coenzyme and Primary Amines Compound
　　CoA is a multiple nucleotide that contains pantothenic acid. It is natural coenzymes present in all animal and plant organisms. It is one of the most active metabolic compounds, and is involved in activation and acyl-group transfers in many enzymatic reactions. CoA plays an important role in the metabolism of carbohydrates, lipids and proteins. It obviously improves the symptoms of anorexia and spiritlessness, and in clinica it is usually used to treat leucocytopenia primary, thrombocytopenic purpura, functional low fever, and so on.Nicotinamide adenine dinucleotide phosphate (cozenmyⅡ) is a natural coenzyme present in all animal and plant organisms. It is essential to the function of many catabolic and biosynthetic pathways found within living organisms.It has a pyridine circle Ball Neodymium Magnets of nicotinamide, and using it oxygenation and deoxidization can occur reversibly, it can be used for the transfer of hydrogen in the metabolizability. Dysfunction of ATP production accompanied by a loss of cozenmyⅡdepletion can be observed, leading to the impairment of antioxidant mechanisms, loss of function, and finally to cell death.Histamine is one of the neurotransmitter which was confirmed in 80’times, The content of the histamine is high in the hypertrophy cells and its physiological activities such as contraction of smooth muscles, extension of capillaries and gastric acid secretions have been investigated. It is one of the chemical mediators of allergy and a neurotransmitter in mammalian brain, and it plays an improtant role in the systems of nerve, breath, cordis blood vessel, digest, immunity, internal secretion. Measurement of histamine in human urine is an important clinical parameter in various diseases such as bronchial asthma and atopic dermatitis, through immediate allergic reactions and cancer.5-hydroxytryptamine (5-HT) is well known as a neurotransmitter, present in most animal and plant organisms. It can improve the constringency, hyperplasia and migration of the blood vessel smooth muscle cell, activate blood platelets, induce the gathering of blood platelets, stimulate mitotic occurrence, activate T, B, NK and phagocytic hemocyte, participate in regulating the blood pressure and delivering nerve of the central nervous system. The increased content of 5-HT in human physiological fluids have been recognized in the patients with carcinoid syndrome, migraine and schizophrenia, so measurement the content of http://www.chinamagnets.biz/
 5-HT in human urine is an important clinical parameter in various diseases and is an important basis in the research of mechanism of spirit paroxysm.In this paper, using molecule spectroscopy (fluorescence and UV spectroscopy) as research instrument, we study the interaction between drug-metal ion complex and biomolecule and the interaction between acetylacetone– formaldehyde and their application. There are four chapters.First, I summarized my thesis and introduced the investigation actuality of fremdness and homeland.Second, we provided a method to determine
　　CoA using drug-metal ion as fluorescence probes and its application. In the Optimum buffer solution, CoA could remarkably enhance the fluorescence intensity of the drug-metal ion complex after adding H5IO6 and the enhanced fluorescence intensity is in proportion to the concentration of CoA. This method can be successfully applied to determination of CoA in injection, human serum and pig livers samples.Third, using tetracycline(TC) - europium ion (Eu3+) complex as a fluorescent probe, we studied the interaction between the complex and nicotinamide adenine dinucleotide phosphate (NADP) and its application. TC containingβ-diketonate configuration is a good ligand for Eu3+ and can transfer energy between TC and Eu3+ and the TC - Eu3+ binary complex can emit the characteristic fluorescence of Eu3+ at 612 nm. In the Optimum buffer solution, NADP could remarkably enhance the fluorescence intensity of the TC - Eu3+ binary complex after and the enhanced fluorescence intensity is in proportion to the concentration of NADP. In this part, using molecule spectroscopy (fluorescence and UV spectroscopy) as research instrument, we studied the fluorescence-increased effect of NADP on the complex system, explained the interaction mechanism. The developed method had been successfully applied to the determination of NADP in the synthetic water samples.Fourth, According Hantzsch reaction, primary amine can react with acetylacetone-formaldehyde to form a new ternary complex through cyclization and condensation reaction, the offspring which is N-substituent-2,6-dimethyl-3,5-dehydroacetic acid-1,4-dihydro pyridine can emit the greenish yellow fluorescence. The method has been successfully applied to the determination the content of histamine and 5-hydroxytryptamine in human urine and serum samples.

The Improvement of Protection and Decoration Anodic Craft Oxidation on Industry Pure Aluminum

The Improvement of Protection and Decoration Anodic Craft Oxidation on Industry Pure Aluminum
　　In this article, the anode oxide film on industry pure aluminum with constant pressure in the sulfuric acid is mainly prepared; It uses the scanning electricity mirror and energy spectrometer to observe and analyze the structure and the composition of film. Based on measuring the corrosion rate of film in seawater imitated by the salt-fog test, to examine the corrosion Ring neodymium magnet resistance of film; the characteristic, composition structure and the growth process of the film were also introduced in detail. The sulfuric acid flinty anodic oxidation experiment process, as well as each kind of processing craft was systematically elaborated. The effect of craft parameters, electrolyte density, oxidized voltage, oxidation current density, oxidized temperature, and oxidized time on the oxide film was discussed.The result indicated that craft parameters have a influence on the membrane thickness, degree of hardness, the inoxidizability and the resistance to wear . Considering the corrosion resistance of oxide film and the economic efficiency, the best craft parameter could be obtainedBy joining the chemical additive in the sulfuric acid electrolyte, in the traditional anodic oxidation same craft, the relationship between the chemical additive content and the production membrane performance could be http://www.chinamagnets.biz/ gained. The result showed that, based on the electrolyte in the sulfuric acid, by joining one kind of choosing organic acid sodium salt, the speed of becoming the membrane was quickened. Also, the temperature scope of the oxidized craft was extended; After joining one kind of rare earth salt, the production membrane thickness, degree of hardness and corrosion resistance were all better than the property obtained by the traditional crafts.The necessity of improving the technology was acquired according to some comparison on the parameters between these technologies.