Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr(1-x)Al(x)N coating

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	Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr(1-x)Al(x)N coating
	M. Zhu; M. S. Li; J. J. Xu; Y. C. Zhou
	2010
发表期刊	Materials and Corrosion-Werkstoffe Und Korrosion
ISSN	0947-5117
卷号	61 期号:11 页码:939-946
摘要	A CrN/Cr(1-x)Al(x)N coating comprised of an inner layer of CrN and an outer layer of Cr1(1-x)Al(x)N with a gradient distribution of Al was deposited on two different alloys by a reactive sputtering method. Oxidation and hot-corrosion tests of the gradient CrN/Cr1(1-x)Al(x)N coating were performed at different temperatures. The phase compositions and morphologies of the as-deposited coating and the corrosion products were investigated by using XRD and SEM/EDS. The results showed that the gradient CrN/Cr1(1-x)Al(x)N coating exhibited good oxidation resistance at temperatures above 1000 degrees C owing to the formation of an alpha-Al(2)O(3)-rich oxide scale. The coating possessed good hot-corrosion resistance in molten sulfate because the inner CrN layer could supply enough Cr to form a relatively protective Cr(2)O(3) after the Al(2)O(3)-enriched scale failed due to its dissolution in the molten sulfate.
部门归属	[zhu, m.; li, m. s.; xu, j. j.; zhou, y. c.] chinese acad sci, shenyang natl lab mat sci, inst met res, high performance ceram div, shenyang 110016, peoples r china. [zhu, m.] xian univ sci & technol, coll mat sci & engn, xian 710054, peoples r china.;li, ms (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, high performance ceram div, 72 wenhua rd, shenyang 110016, peoples r china;mshli@imr.ac.cn
关键词	High-temperature Oxidation Aluminide Coatings Overlay Coatings Nitride Coatings Behavior Alloy Superalloy K38g Cr
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31789
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,J. J. Xu,et al. Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr(1-x)Al(x)N coating[J]. Materials and Corrosion-Werkstoffe Und Korrosion,2010,61(11):939-946.
APA	M. Zhu,M. S. Li,J. J. Xu,&Y. C. Zhou.(2010).Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr(1-x)Al(x)N coating.Materials and Corrosion-Werkstoffe Und Korrosion,61(11),939-946.
MLA	M. Zhu,et al."Short-term oxidation and hot corrosion resistance of a gradient CrN/Cr(1-x)Al(x)N coating".Materials and Corrosion-Werkstoffe Und Korrosion 61.11(2010):939-946.