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| Effect of Sulfuric Acid Electrolyte Concentration on Porous Alumina Film |
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Received:February 09, 2011
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.05.006 |
| KeyWord:H2SO4 electrolyte; Anodic oxidation; Electrolyte concentration; Degree of ordered |
| Author | Institution |
| WANG Xiao-yan |
东北大学 |
| ZHAI Xiu-jing |
东北大学 |
| ZHANG Ting-an |
东北大学 |
| FU Yan |
东北大学 |
| ZHENG Shuang |
沈阳航空工业学院 |
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| Abstract: |
| High-pure aluminum foil was anodic oxidated in H2SO4 electrolyte. Effects of electrolyte concentration on porous alumina film were investigated. The results indicated that aperture of nano-pore increased with the increase of electrolyte concentration, and the density of nano-pore reduced with the increase of electrolyte concentration, while the order of nano-pore improved first and then deteriorated with the increase of electrolyte concentration. When aluminum foil was anodic oxidated at 23 V direct voltages, the better uniformity of aperture and order of alumina film was achieved in 0.6 ~ 1.0 mol/L electrolytes, especially in 0.8 mol/L H2SO4. The thickness of alumina film increased with the increase of electrolyte concentration. Exorbitant electrolyte concentration was prone to rapid breakdown the aluminum foil. |
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