Oxidation behavior of sputtered microcrystalline coating of superalloy K17F at high temperature

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	Oxidation behavior of sputtered microcrystalline coating of superalloy K17F at high temperature
	H. Y. Lou; Y. J. Tang; X. F. Sun; H. R. Guan
	1996
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	207 期号:1 页码:121-128
摘要	The influence of sputtering on the high temperature oxidation resistance of the cast superalloy M17F has been studied. The as-sputtered microcrystalline layer has a homogeneous gamma phase structure with very fine gl ain size (20-100 nm), while the as-cast alloy is composed of gamma, gamma' and carbides. The oxidation resistance of the microcrystalline coating of K17F alloy is much better than that of the as-cast alloy, and is even superior to that of the pack aluminized alloy. At the initial oxidation stage, the oxide scale which formed on the as-cast alloy is composed of complex oxides of Cr, Ti, Ni and Al. As the: oxidation time is prolonged, the amount of alpha-Al2O3 increases and becomes the main product. However, the scale which formed on the microcrystalline coating consists only of alpha-Al2O3. Cyclic oxidation and acoustic emission examination showed that the oxide scale on the cast M17F alloy easily spalled during cooling, but the alpha-Al2O3 scale on the sputtered layer had excellent adhesion. The beneficial effects of microcrystalline structure on oxidation resistance are discussed briefly.
部门归属	acad sinica,inst met res,shenyang 110015,peoples r china.;lou, hy (reprint author), chinese acad sci,inst corros & protect met,state key lab corros & protect,shenyang 110015,peoples r china
关键词	K17f Sputtering Oxidation Behavior
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38357
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Lou,Y. J. Tang,X. F. Sun,et al. Oxidation behavior of sputtered microcrystalline coating of superalloy K17F at high temperature[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1996,207(1):121-128.
APA	H. Y. Lou,Y. J. Tang,X. F. Sun,&H. R. Guan.(1996).Oxidation behavior of sputtered microcrystalline coating of superalloy K17F at high temperature.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,207(1),121-128.
MLA	H. Y. Lou,et al."Oxidation behavior of sputtered microcrystalline coating of superalloy K17F at high temperature".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 207.1(1996):121-128.