Anodizing of aluminium and AA 2024-T3 alloy in chromic acid: Effects of sulphate on film growth

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• 作者：D. Elabar^a ; G.R. La Monica^b ; M. Santamaria^b ; F. Di Quarto^b ; P. Skeldon^b ; ^{p.skeldon@manchester.ac.uk} ; G.E. Thompson^b
• 关键词：Aluminium ; AA 2024 alloy ; Anodizing ; Chromic acid ; Sulphate
• 刊名：Surface and Coatings Technology
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：309
• 期：Complete
• 页码：480-489
• 全文大小：2262 K
• 卷排序：309

文摘

Film growth rate is affected by SO42 − impurity in chromic acid anodizing. SO42 − affects the film morphology and film composition. Effects depend on substrate composition, film morphology and oxygen generation. Unstable pore diameter occurs at high levels of SO42 − impurity. SO42 − impurity influences the corrosion protection provided by the anodic film.