High temperature oxidation behavior of directionally solidified NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho eutectic alloy

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	High temperature oxidation behavior of directionally solidified NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho eutectic alloy
	Z. S. Wang; Y. Xie; J. T. Guo; L. Z. Zhou; Z. Q. Hu; G. Y. Zhang; Z. G. Chen
	2012
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	22 期号:7 页码:1582-1587
摘要	The isothermal oxidation behavior of NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho directional eutectic alloy was investigated with the help of scanning electron microscopy and X-ray diffraction. The results revealed that a continuous Al2O3 scale was formed and owned excellent oxidation resistance in the temperature range of 900-1100 degrees C. When the temperature was up to 1150 degrees C, the continuous Al2O3 oxide film ruptured. Trace rare earth element Ho distributed uniformly in the alloy and relatively high level of Al in Cr(Mo) phase are beneficial to the formation of continuous and compact Al2O3 scale. During the oxidation, a phase transformation from theta-Al2O3 to alpha-Al2O3 existed on the surface of oxidation film. It resulted in the abnormal oxidation mass gain happening when the alloy was oxidized at 1000 degrees C or 1050 degrees C.
部门归属	[wang zhen-sheng; xie yi; guo jian-ting; zhou lan-zhang; hu zhuang-qi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wang zhen-sheng; zhang guang-ye; chen zhi-gang] hunan univ sci & technol, coll electromech engn, xiangtan 411201, peoples r china. [xie yi] hunan elect power corp res inst, changsha 410007, hunan, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china.;jtguo@imr.ac.cn
关键词	Intermetallic Compounds Nial High Temperature Oxidation Directional Eutectic Alloy
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60330
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. S. Wang,Y. Xie,J. T. Guo,et al. High temperature oxidation behavior of directionally solidified NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho eutectic alloy[J]. Transactions of Nonferrous Metals Society of China,2012,22(7):1582-1587.
APA	Z. S. Wang.,Y. Xie.,J. T. Guo.,L. Z. Zhou.,Z. Q. Hu.,...&Z. G. Chen.(2012).High temperature oxidation behavior of directionally solidified NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho eutectic alloy.Transactions of Nonferrous Metals Society of China,22(7),1582-1587.
MLA	Z. S. Wang,et al."High temperature oxidation behavior of directionally solidified NiAl-31Cr-2.9Mo-0.1Hf-0.05Ho eutectic alloy".Transactions of Nonferrous Metals Society of China 22.7(2012):1582-1587.