Oxidation behavior of sputter-deposited NiCrAlY coating

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	Oxidation behavior of sputter-deposited NiCrAlY coating
	M. H. Li; Z. Y. Zhang; X. R. Sun; J. G. Li; E. Yin; W. Y. Hu; H. R. Guan; Z. Q. Hu
	2003
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	165 期号:3 页码:241-247
摘要	The oxidation behavior of the sputtered NiCrAlY coating at 900, 1000 and 1100 C was investigated. The oxidation kinetics of the coating showed phase transformation from theta-Al2O3 to alpha-Al2O3. The higher the oxidation temperature, the faster was the transformation from theta-Al2O3 to alpha-Al2O3. The rapid formation of alpha-Al2O3 which led to the mass gain of specimen at 1100 C was the lowest at the initial oxidation stage. Under steady-state condition, the oxidation reaction appeared to be controlled by, diffusional transport in alpha-Al2O3 scale with activation energy of approximately 390 kJ/mol. The scale formed on the coating was alumina exclusively, though there exist different modifications of alumina. This favorable oxidation behavior could be mainly attributed to the high aluminum content, the third element Cr and the nanocrystallized microstructure of the coating. During oxidation, beta-NiAl transformed to gamma'-Ni3Al and gamma phase because of the diffusion and the formation of Al2O3. (C) 2002 Elsevier Science B.V. All rights reserved.
部门归属	chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. hunan univ, coll mat sci & engn, changsha 410082, peoples r china.;li, mh (reprint author), chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china;mhli@imr.ac.cn
关键词	Sputtering Nicraly Coating Oxidation Microstructure High-temperature Alloys Superalloy Scale
URL	查看原文
WOS记录号	WOS:000180302900004
引用统计	被引频次：66[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/321006/35893
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. H. Li,Z. Y. Zhang,X. R. Sun,et al. Oxidation behavior of sputter-deposited NiCrAlY coating[J]. Surface & Coatings Technology,2003,165(3):241-247.
APA	M. H. Li.,Z. Y. Zhang.,X. R. Sun.,J. G. Li.,E. Yin.,...&Z. Q. Hu.(2003).Oxidation behavior of sputter-deposited NiCrAlY coating.Surface & Coatings Technology,165(3),241-247.
MLA	M. H. Li,et al."Oxidation behavior of sputter-deposited NiCrAlY coating".Surface & Coatings Technology 165.3(2003):241-247.