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Corrosion behaviour of Zn-Al pseudo-alloy coating on carbon steel in chloride environments

  • University of Science and Technology Beijing

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In this work, Zn-Al alloy and Zn-Al pseudo-alloy coatings are deposited on carbon steel by arc spray technology. The corrosion behaviour of the coatings has been studied by salt spray test and electrochemical experiment. The morphology of the coatings exposed to salt spray test for 400 h was analyzed using SEM and EDS. Results show that corrosion rate of Zn-Al alloy coating is faster than that of Zn-Al pseudo-alloy coating and the steel substrate is attacked. The corrosion products formed on the surface of Zn-Al alloy coating were loose, with a large number of cracks and holes, but the Zn-Al pseudo-alloy coating is converted into a stable Al-rich oxide layer, which protects the steel substrate against corrosive attacks and enhances the corrosion resistance of the Zn-Al pseudo-alloy coating. Electrochemical tests show the Zn-Al pseudo-alloy coating as a sacrificial protection coating has the capability of providing sacrificial protection for the steel substrate.

源语言英语
主期刊名Metallurgy Technology and Materials
45-48
页数4
DOI
出版状态已出版 - 2012
已对外发布
活动2012 International Conference on Metallurgy Technology and Materials, ICMTM 2012 - Jeju Island, 韩国
期限: 11 5月 201212 5月 2012

出版系列

姓名Advanced Materials Research
567
ISSN(印刷版)1022-6680

会议

会议2012 International Conference on Metallurgy Technology and Materials, ICMTM 2012
国家/地区韩国
Jeju Island
时期11/05/1212/05/12

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