Effects of Dy on the adherence of Al2O3/NiAl interface: A combined first-principles and experimental studies

被引：38
作者：
Zhang, Tian
Guo, Hongbo [1 ]
Gong, Shengkai
Xu, Huibin
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
来源：
CORROSION SCIENCE | 2013年 / 66卷
关键词：
Metal coatings; Thermal cycling; Oxidation; Segregation; CYCLIC OXIDATION RESISTANCE; TOTAL-ENERGY CALCULATIONS; BETA-NIAL COATINGS; MECHANICAL-PROPERTIES; BEHAVIOR; PLATINUM; SULFUR; AL; SEGREGATION; PERFORMANCE;
D O I：
10.1016/j.corsci.2012.09.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of dysprosium (Dy) on the adherence of Al2O3/NiAl interface were investigated by using first-principles theory calculations as well as experimental methods. The results showed that Dy could improve the adherence of the oxide/metal interface by two mechanisms: the first one was that Dy had a strong affinity for sulfur impurity in NiAl by the formation of Dy-S bonds, and thus can suppress the negative effects of sulfur; the second one was that Dy directly improved the Al2O3/NiAl interface adhesion by participating in bonding across the interface. (c) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：59 / 66
页数：8
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