Failure Behavior of an Aluminide Coating on a Co-Base Superalloy during High-Temperature Oxidation in Air

被引:0
|
作者
P. S. Liu
K. M. Liang
S. R. Gu
机构
[1] Tsinghua University,Department of Materials Science and Engineering
[2] Chinese Academy of Sciences,Institute of Metal Research
来源
Oxidation of Metals | 2000年 / 54卷
关键词
aluminide coating; Co-base superalloy; high-temperature oxidation; corrosion nodule;
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学科分类号
摘要
A surface-morphology change has been observed for an aluminide coating on the Co-base superalloy DZ40M during oxidation at 1100°C in air. The oxide formed on the coating remained an even grayish-white color during the stable oxidation stage, whereas, dark-colored corrosion nodules were observed when oxidation of the coating accelerated. The number of nodules increased with time, along with growth of the nodules, eventually covering the entire surface which signified failure.
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页码:277 / 283
页数:6
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