The oxidation of single-crystal nickel-based superalloys

被引：1
|
作者：
A. Akhtar
S. Hegde
R. C. Reed
机构：
[1] Department of Materials Engineering at the University of British Columbia in Vancouver,
[2] Department of Materials at Imperial College in London,undefined
来源：
JOM | 2006年 / 58卷
关键词：
NiAl; Bond Coat; Thermal Barrier Coating; Internal Oxidation; External Scale;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A phase transformation occurs in nickel-based single-crystal superalloys as a result of the oxidation that creates the external NiO scale. This transformation, which is the precursor to internal oxidation, creates the β phase (NiAl) first followed by the δ phase (Ni2Al3) prior to the formation of the spinel Ni (Cr, Al)2O4 and Al2O3 in succession. The implications of this effect on the rate of oxidation are discussed in this article.
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页码：37 / 42
页数：5
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