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STUDIES ON THE COMPOSITION AND STRUCTURE OF THE CHROMATE CONVERSION COATINGS ON THE SURFACE OF ALUMINUM AND ITS ALLOY Ⅲ.THE ANTICORROSION BEHAVIOUR OF THE CONVERSION COATINGS |
Ni Hongbing Yu Zuzhan (Department of Chemistry Fudan University Shanghai) |
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Abstract The results of salt spraying tests indicate that the corrosion resistance of chromate conversion coatings on aluminum and its alloy is dependent on the substrate composition and on the surface pretreatment condition.The coating on L_2-Y is better than that on Ly_(12)-C_2.When an acidic(HNO_3+CrO_3+HF) pretreatment is used in place of alkaline etching,the corrosion resistance of these coatings could be markedly improved.
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Received: 25 February 1988
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Cite this article:
Ni Hongbing Yu Zuzhan (Department of Chemistry Fudan University Shanghai). STUDIES ON THE COMPOSITION AND STRUCTURE OF THE CHROMATE CONVERSION COATINGS ON THE SURFACE OF ALUMINUM AND ITS ALLOY Ⅲ.THE ANTICORROSION BEHAVIOUR OF THE CONVERSION COATINGS. J Chin Soc Corr Pro, 1988, 8(1): 45-50.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1988/V8/I1/45
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[1] 倪红兵,张冠生,郁祖湛,赵国庆,董树忠,中国腐蚀与防护学报,7(1) ,50(1987) [2] 倪红兵.严曼明,郁祖湛,中国腐蚀与防护学报,7(2) ,121(1987) [3] Samuels,S.;Kevin,W.,Metal Finishing,6,49(1981) [4] 上海新华无线电厂三车间,材料保护,(4) ,17(1975) |
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