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.