Transient-alumina transformations during the oxidation of magnetron-sputtered CoCrAl nanocrystalline coatings

IMR OpenIR

	Transient-alumina transformations during the oxidation of magnetron-sputtered CoCrAl nanocrystalline coatings
	X. Peng; D. R. Clarke; F. Wang
	2003
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	60 期号:3-4 页码:225-240
摘要	The thermally- grown alumina formed at 1000, 1100, and 1200degreesC on magnetron- sputtered, nanocrystalline CoCrAl coatings, with and without yttrium, has been characterized using photostimulated- luminescence spectroscopy. The measurements enable the evolution of initially- formed transient alumina to its stable, alpha phase to be followed, and in particular, the effect of yttrium on the transformation. Yttrium retards the transformation from gamma to theta alumina and also its subsequent transformation to alpha alumina. The retardation of the transformation decreases with increasing oxidation temperature until at similar to 1200degreesC the transformation is complete within minutes. The presence of yttrium in the coatings also affects the residual stress in the thermally- grown oxide. For samples oxidized at 1100 and 1200degreesC the residual stress is similar to 0.3 GPa higher in the oxide on the Y- containing coating, whereas the residual stresses are the same after oxidation at 1000degreesC.
部门归属	chinese acad sci, inst met res, state key lab corros & protect met, shenyang 110016, peoples r china. univ calif santa barbara, coll engn, dept mat, santa barbara, ca 93106 usa.;wang, f (reprint author), chinese acad sci, inst met res, state key lab corros & protect met, shenyang 110016, peoples r china
关键词	Oxidation Alumina Scale Phase Transformation Magnetron-sputtering Nanocoating Cocral Yttrium Piezospectroscopy Oxide Alloys Scale Behavior Morphology Yttrium Stress Growth Nickel
URL	查看原文
WOS记录号	WOS:000185680900002
引用统计	被引频次：75[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/321006/35995
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Peng,D. R. Clarke,F. Wang. Transient-alumina transformations during the oxidation of magnetron-sputtered CoCrAl nanocrystalline coatings[J]. Oxidation of Metals,2003,60(3-4):225-240.
APA	X. Peng,D. R. Clarke,&F. Wang.(2003).Transient-alumina transformations during the oxidation of magnetron-sputtered CoCrAl nanocrystalline coatings.Oxidation of Metals,60(3-4),225-240.
MLA	X. Peng,et al."Transient-alumina transformations during the oxidation of magnetron-sputtered CoCrAl nanocrystalline coatings".Oxidation of Metals 60.3-4(2003):225-240.