A comparison of the corrosion behavior of WC-Co-Cr and WC-CoHVOF thermally sprayed coatings by in situ atomic force microscopy (AFM)

被引：61
|
作者：
Perry, JM [1 ]
Neville, A
Hodgkiess, T
机构：
[1] Univ Glasgow, Dept Mech Engn, Glasgow G12 8QQ, Lanark, Scotland
[2] Heriot Watt Univ, Dept Mech & Chem Engn, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2002年 / 11卷 / 04期
关键词：
atomic force microscopy (AFM); cermet; corrosion; electrochemical;
D O I：
10.1361/105996302770348673
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The corrosion behavior of WC-Co-Cr and WC-Co high velocity oxygen fuel (HVOF) sprayed coatings were examined in static saline conditions. Direct current (DC) polarization tests were conducted and the electrochemical corrosion behavior was shown, by in situ atomic force microscopy (AFM) and scanning electron microscopy (SEM), to be complex because of the composite ceramic-metal nature of the coating. The addition of chromium to the matrix greatly enhanced the corrosion resistance of the coating.
引用
收藏
页码：536 / 541
页数：6
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