Effect of Mo, Ta, and Re on high-temperature oxidation behavior of minor HI doped β-NiAl alloy

被引：76
作者：
Han, Baohong
Ma, Yue [1 ,2 ]
Peng, Hui [1 ,2 ]
Zheng, Lei [1 ,2 ]
Guo, Hongbo [1 ,2 ]
机构：
[1] Beijing Key Lab Adv Funct Mat & Thin Film Technol, Beijing, Peoples R China
[2] Beihang Univ BUAA, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 102卷
关键词：
Intermetallics; Rare earth elements; Thermal cycling; Oxidation; Interfaces; Segregation; THERMAL BARRIER COATINGS; CYCLIC-OXIDATION; BOND COAT; REACTIVE ELEMENTS; SCALE ADHESION; RESISTANCE; GROWTH; AL; PHASE; CONSTITUTION;
D O I：
10.1016/j.corsci.2015.10.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and cyclic oxidation behavior of minor Hf-doped NiAl alloys with addition of different alloying elements including Mo, Ta, and Re were investigated. Co-precipitation of Ta and Hf as well as Re and Hf occurred during alloy preparation, whereas Mo and Hf precipitated individually into different phases. Over 0.5 at.% addition of Mo, Ta and Re had negative influence on the oxidation behavior of beta-NiAlHf alloy, while the effect could be ignorable once the concentration reduced to less than 0.05 at.%. The interaction mechanism between Ta and Hf as well as Re and Hf was discussed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：222 / 232
页数：11
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