Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air

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	Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air
	M. Zhu; M. S. Li; Y. C. Zhou
	2006
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	201 期号:6 页码:2878-2886
摘要	Cr1-xAlxN coatings (0.18 <= x <= 0.47) were deposited on a Ni-based superalloy (K38G) by reactive sputtering method. High-temperature oxidation behavior of the coatings was investigated at 1000-1100 degrees C in air. The results indicated that the parabolic rate constants of Cr1-xAlxN coatings were much lower than that of the bare K38G alloy and the degree depended on the aluminum content of the coatings, demonstrating that this kind of coatings can effectively provide oxidation protection to superalloys in the temperature range of 1000 degrees C-1100 degrees C. The oxide scales consisted of a solid solution of (Cr,Al)(2)O-3 and pure Cr2O3 grains dispersedly distributed in the outer oxide layer. An marker experiments revealed that the oxidation of Cr1-xAlxN coatings proceeded mainly by inward diffusion of oxygen through (Cr,Al)(2)O-3 scales. Meanwhile, outward diffusion of Cr ions also took place through short diffusion paths in the scales, resulting in formation of pure Cr2O3 grains on the outer layer of oxide scales. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. chinese acad sci, grad sch, beijing 100039, peoples r china.;li, ms (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, 72 wenhua rd, shenyang 110016, peoples r china;mshli@imr.ac.cn
关键词	Cr1-xalxn Coatings Reactive Sputtering High-temperature Oxidation K38g Superalloy High-temperature Oxidation Aluminum Nitride Coatings Steel Substrate Films Behavior Alloys Oxide Cr
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WOS记录号	WOS:000244831800106
引用统计	被引频次：42[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/321006/34780
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Zhu,M. S. Li,Y. C. Zhou. Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air[J]. Surface & Coatings Technology,2006,201(6):2878-2886.
APA	M. Zhu,M. S. Li,&Y. C. Zhou.(2006).Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air.Surface & Coatings Technology,201(6),2878-2886.
MLA	M. Zhu,et al."Oxidation resistance of Cr1-xAlxN (0.18 <= x <= 0.47) coatings on K38G superalloy at 1000-1100 degrees C in air".Surface & Coatings Technology 201.6(2006):2878-2886.