Improving high-temperature oxidation resistance of TiAl-based alloys by MnCl2 surface treatment

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	Improving high-temperature oxidation resistance of TiAl-based alloys by MnCl2 surface treatment
	L. Xin; G. Shao; F. Wang; P. Tsakiropoulos; T. Li
	2003
发表期刊	Intermetallics
ISSN	0966-9795
卷号	11 期号:7 页码:651-660
摘要	The effects of chlorine on the high temperature (900-1115 degreesC) oxidation resistance of gamma-TiAl-based alloys were studied by applying MnCl2 on the sample surfaces of the Ti47Al, Ti55Al, Ti47Al3V and Ti47Al2Cr2Nb alloys. The oxidation rates of these alloys decreased remarkably after treating the sample surfaces with MnCl2. The oxide scales formed on TiAl based alloys generally consisted of a TiO2-rich outer layer and a TiO2 + Al2O3 mixed inner layer. After surface treatment with MnCl2, a very convoluted scale consisting of a thin discontinuous TiO2 Outer layer and continuous Al2O3 inner layer with a small amount of TiO2 formed on the four alloys. At the initial stage of oxidation the continuous Al2O3 layer had formed on the MnCl2 treated samples. It is suggested that occurrence of chlorination of aluminium during the initial stage promoted the formation of the continuous Al2O3 layer. (C) 2003 Elsevier Science Ltd. All rights reserved.
部门归属	chinese acad sci, state key lab corros & protect met, inst met res, shenyang 110016, peoples r china. univ surrey, sch engn h6, surrey gu2 7xh, england.;shao, g (reprint author), chinese acad sci, state key lab corros & protect met, inst met res, 62 wencui rd, shenyang 110016, peoples r china
关键词	Titanium Alummides Based On Tial Coatings Oxidation Diffusion Intermetallic And Otherwise Gamma-titanium Aluminides Behavior
URL	查看原文
WOS记录号	WOS:000184264700004
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36093
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Xin,G. Shao,F. Wang,et al. Improving high-temperature oxidation resistance of TiAl-based alloys by MnCl2 surface treatment[J]. Intermetallics,2003,11(7):651-660.
APA	L. Xin,G. Shao,F. Wang,P. Tsakiropoulos,&T. Li.(2003).Improving high-temperature oxidation resistance of TiAl-based alloys by MnCl2 surface treatment.Intermetallics,11(7),651-660.
MLA	L. Xin,et al."Improving high-temperature oxidation resistance of TiAl-based alloys by MnCl2 surface treatment".Intermetallics 11.7(2003):651-660.