High-temperature air oxidation of coatings based on eutectic (β-NiAl plus γ-Re) alloys and NiAl intermetallide

被引：2
|
作者：
Oliker, V. E. [1 ]
Barabash, M. Yu. [1 ]
Grechishkin, E. F. [1 ]
Timofeeva, I. I. [1 ]
Gridasova, T. Ya. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2007年 / 46卷 / 3-4期
关键词：
nickel; aluminum; intermetallide; eutectic alloy; high-temperature oxidation; surface; structure;
D O I：
10.1007/s11106-007-0028-2
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High-temperature air oxidation (up to 1100 degrees C) of detonation coatings made of NiAl intermetallide and eutectic (beta-NiAl + gamma-Re) alloys is examined with x-ray diffraction and electron microscopy. A substantial difference between the air oxidation mechanisms of these coatings is revealed. The key factor that governs the air oxidation of these coatings is the ratio between rates at which aluminum and nickel oxides are formed.
引用
收藏
页码：175 / 181
页数：7
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