Characterization and electrochemical assessment of Al-Zn-In alloy with trivalent chromium process coating

被引：6
|
作者：
Wang, Xi [1 ]
Yang, Fan [1 ]
Viswanathan, Gopal [1 ]
Wang, Shan-Shan [1 ]
Frankel, G. S. [1 ]
机构：
[1] Ohio State Univ, Fontana Corros Ctr, Dept Mat Sci & Engn, 2041 Coll Rd, Columbus, OH 43210 USA
来源：
CORROSION SCIENCE | 2020年 / 176卷
关键词：
Al-Zn-In alloy; Trivalent chromium process; Al-rich primer; PROCESS TCP COATINGS; CHLORIDE SOLUTIONS; ALUMINUM-ALLOYS; INTERMETALLIC PHASES; EPOXY PRIMER; CORROSION; INDIUM; ZINC; ACTIVATION; BEHAVIOR;
D O I：
10.1016/j.corsci.2020.108933
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To reduce self-corrosion of Al-Zn-In pigments in an Al-rich primer, trivalent chromium process (TCP) was applied to the pigments before mixing in the epoxy binder. The formation of TCP and its effects on both the Al-ZnIn bulk alloy and pigment particles were investigated in this study. The TCP layer on the Al-Zn-In alloy has a bilayer structure similar to TCP layers formed on other alloys. The corrosion rate of bulk Al-Zn-In alloy is reduced by the TCP treatment. The TCP layer likely blocks the access of Cl- to the Al-Zn-In alloy, which reduces corrosion attack initiation.
引用
收藏
页数：12
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