Affiliation:
1. Guizhou Normal University
Abstract
A new passivation process has been developed for producing a chrome-free and coloured conversion coating on aluminium alloy AA6063 with K2ZrF6. The conversion coating obtained has a dark film, which enables visual assessment of the coating development and coating quality during processing. The colouring effect is a significant advantage over the zirconium based conversion coatings currently used in the industry, which are largely colourless. The new treatment process is simple and allows a uniform coating to be formed within a few minutes. The composition and the surface morphology of the coatings were characterized. The corrosion resistance of the coated samples was evaluated by electrochemical tests. Through electrochemical analysis, corrosion current of the coatings is low, it has excellent corrosion resistance; SEM, EDS and XRD are used to analyze the process coating.
Publisher
Trans Tech Publications, Ltd.
Reference18 articles.
1. Guo Rui-guang，Geng Zhi-liang. Some suggestions on the research of non-chromium conversion coating technology[j]. Electroplating & Finishing, 2008(05).
2. Dr. Goodman P. ERA Report 2006-0134. (2006).
3. U.S. Department of Health and Human Services Public Health Service, Draft Toxicological Profile for Chromium. (2008).
4. Yu Xingwen, Cao Chunan, Lin Haichao, Yin Zhongda, Zhou Derui. Study on the corrosion behavior of Ce conversion caotings on Al6061/SiCp composites. Acta metallurgica sinica[J], 2000(03).
5. Zhu Zu-fang, Technique status and development trends of surface treatment on aluminum alloys for architectural applications, Electroplating & Finishing, 2005(04).
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1 articles.
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