High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings

IMR OpenIR

	High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings
	Zhao, Panpan; Shen, Mingli; Gu, Yan; Zhu, Shenglong; Wang, Fuhui; mlshen@imr.ac.cn
	2015
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	281 页码:44-50
摘要	The substrate bias effects on high vacuum arc ion plating (HV-AIP) of NiCrAlY coatings on superalloy were investigated at the vacuum level of 10(-3)-10(-4)Pa, which are 2-3 orders in magnitude better than that of conventional low vacuum arc ion plating (LV-AIP). The negative bias applied to the substrate was in the range of -50 V to -450 V. Microstructures, deposition rates, and chemical compositions of the coatings are significantly influenced by the negative bias. Except for commonly observed bias induced densification in microstructure and decrease in deposition rate, strong preferential sputtering effect at high bias was observed. The sputtering yield for Cr was estimated to be ranged from similar to 0.1 to similar to 0.2 at bias from -50 V to -450 V, while those for Ni and Al were from similar to 0.1 to 1.5. As a result, the major phase constitution of the coatings changed from gamma-Ni/y'-Ni3Al phases at bias of-SO V to alpha-Cr phase at bias of -450 V. Such stronger preferential sputtering effect in HV-AIP fosters a strategy for preparing compositionally gradient NiCrAlY coatings just by control of the substrate bias without the need of further treatments or multi-targets. Based on this concept, preparation of several types of gradient NiCrAlY coatings with great flexibilities by one target and one process was demonstrated. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[zhao, panpan ; shen, mingli ; gu, yan ; zhu, shenglong ; wang, fuhui] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	High Vacuum Arc Ion Plating Mcraly Coatings Bias Sputtering Gradient Coating
资助者	National key Basic Research Program of China (973 Program) [2012CB625100]; National High-tech Research and Development Program (863 Program) [2012AA03A512]; National Natural Science Foundation of China [51301185]
收录类别	sci
语种	英语
WOS记录号	WOS:000366072200006
引用统计	被引频次：27[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/321006/74887
专题	中国科学院金属研究所
通讯作者	mlshen@imr.ac.cn
推荐引用方式 GB/T 7714	Zhao, Panpan,Shen, Mingli,Gu, Yan,et al. High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings[J]. SURFACE & COATINGS TECHNOLOGY,2015,281:44-50.
APA	Zhao, Panpan,Shen, Mingli,Gu, Yan,Zhu, Shenglong,Wang, Fuhui,&mlshen@imr.ac.cn.(2015).High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings.SURFACE & COATINGS TECHNOLOGY,281,44-50.
MLA	Zhao, Panpan,et al."High vacuum arc ion plating NiCrAlY coatings: Bias effect and approach to preparation of functional gradient coatings".SURFACE & COATINGS TECHNOLOGY 281(2015):44-50.