High temperature corrosion behavior of a multilayer CrAlN coating prepared by magnetron sputtering method on a K38G alloy

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	High temperature corrosion behavior of a multilayer CrAlN coating prepared by magnetron sputtering method on a K38G alloy
	T. P. Li; Y. C. Zhou; M. S. Li; Z. P. Li
	2008
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	202 期号:10 页码:1985-1993
摘要	A multilayer CrAlN coating of Cr0.58Al0.42N/Cr0.84Al0.16N/Cr0.51Al0.49N has been fabricated by a reactive magnetron sputtering method. It consists of a bonding layer, a Cr-rich intermediate layer and an Al-rich outer layer. The multilayer structure provides the coating with good protection against different types of high temperature corrosion, i.e., high temperature oxidation and hot corrosion. The outer Al-rich layer gives the coating good oxidation resistance at 1000 and 1100 degrees C due to the formation of a continuous alumina scale. The parabolic rate constants of the coated samples decrease by about 2 orders of magnitude compared with that of the bare alloy samples. The intermediate Cr-rich layer can form a Cr2O3 scale to provide good protection under the,hot corrosion conditions in the Na2SO4 salt fluxing at 900, 950 and 1000 degrees C. The incubation period of the hot corrosion extends several times longer when the alloy was coated by the multilayer coating at the three selected temperatures. (c) 2007 Elsevier B.V. All rights reserved.
部门归属	[li, tianpeng; zhou, yanchun; li, meishuan] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china. [li, tianpeng] chinese acad sci, grad sch, beijing 100039, peoples r china. [li, zhongping] natl key lab adv funct composite mat, beijing 100076, peoples r china.;zhou, yc (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;yczhou@imr.ac.cn
关键词	Multilayer Coating Oxidation Hot Corrosion Magnetron Sputtering Thermal Barrier Coatings Oxidation Resistance Cyclic Oxidation Microstructural Development Diffusion Coatings Hot Corrosion Super-alloys Fused Na2so4 Bond-coat Solubilities
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WOS记录号	WOS:000253309800011
引用统计	被引频次：22[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/321006/32896
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. P. Li,Y. C. Zhou,M. S. Li,et al. High temperature corrosion behavior of a multilayer CrAlN coating prepared by magnetron sputtering method on a K38G alloy[J]. Surface & Coatings Technology,2008,202(10):1985-1993.
APA	T. P. Li,Y. C. Zhou,M. S. Li,&Z. P. Li.(2008).High temperature corrosion behavior of a multilayer CrAlN coating prepared by magnetron sputtering method on a K38G alloy.Surface & Coatings Technology,202(10),1985-1993.
MLA	T. P. Li,et al."High temperature corrosion behavior of a multilayer CrAlN coating prepared by magnetron sputtering method on a K38G alloy".Surface & Coatings Technology 202.10(2008):1985-1993.