High-temperature oxidation behavior of Nb67-xW15Si18Hfx(x=0, 5 and 10) alloys

被引：0
作者：
Jiang Rong-li [1 ]
Liu Dong-ming
Sha Jiang-bo
Ma Yue
机构：
[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2006年 / 16卷
关键词：
Nb-Si based alloys; Ni67-xW15Si18Hfx alloys; high-temperature oxidation; oxidation resistance; oxide;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The oxidation behaviors of Nb67-xW15Si18Hfx (x=0, 5, 10) alloys were studied at 1 250 degrees C in air. It is found that the Nb67W15Si18 alloy has the best oxidation resistance among the three alloys; and Hf addition is harmful to the oxidation resistance of the Nb67W15Si18 alloy. The oxides formed on the Nb67W15Si18 alloy are mainly Nb12WO33 and NbO2, and that on the Nb62W15Si18Hf5 and Nb57W15Si18Hf10 alloys is Nb2O5. Effect of Hf on the oxidation behavior of the Nb67-xW15Si18Hfx alloys has been discussed based on microstructures and kinetics of oxidation.
引用
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页码：S2009 / S2012
页数：4
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