High temperature corrosion behavior of an AIP NiCoCrAlY coating modified by aluminizing

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	High temperature corrosion behavior of an AIP NiCoCrAlY coating modified by aluminizing
	J. T. Lu; S. L. Zhu; F. H. Wang
	2011
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	205 期号:21-22 页码:5053-5058
摘要	NiCoCrAlY coatings were prepared on superalloy K4I7G using arc ion plating (Alp), then some specimens coated with NiCoCrAlY were aluminized using a pack cementation method. The high temperature oxidation and hot corrosion behavior of the ordinary and the aluminized NiCoCrAlY coatings were studied. The results indicated that alpha-Al(2)O(3) scales grew on both coatings during oxidation at 1000 degrees C and 1100 degrees C in air, and the aluminized NiCoCrAlY coating always showed lower oxidation rates and lower degradation rates. The hot corrosion tests were carried out by applying salt films of 25 wt.% K(2)SO(4)+ 75 wt.% Na(2)SO(4) mixture on the specimens and exposing in air at 900 degrees C. The aluminized NiCoCrAlY coating showed a longer lifetime by forming a continuous Al(2)O(3) scale. But, cracks and spallation of the oxide scales occurred on the ordinary NiCoCrAlY coating after 80 h. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[lu, jintao; zhu, shenglong; wang, fuhui] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;lu, jt (reprint author), chinese acad sci, state key lab corros & protect, inst met res, wencui rd 62, shenyang 110016, peoples r china;jtlu@imr.ac.cn
关键词	Nicocraly Coating Aluminizing Oxidation Hot Corrosion Oxidation
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WOS记录号	WOS:000293119800025
引用统计	被引频次：36[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/321006/30559
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. T. Lu,S. L. Zhu,F. H. Wang. High temperature corrosion behavior of an AIP NiCoCrAlY coating modified by aluminizing[J]. Surface & Coatings Technology,2011,205(21-22):5053-5058.
APA	J. T. Lu,S. L. Zhu,&F. H. Wang.(2011).High temperature corrosion behavior of an AIP NiCoCrAlY coating modified by aluminizing.Surface & Coatings Technology,205(21-22),5053-5058.
MLA	J. T. Lu,et al."High temperature corrosion behavior of an AIP NiCoCrAlY coating modified by aluminizing".Surface & Coatings Technology 205.21-22(2011):5053-5058.