An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy

doi:10.1016/j.jmst.2020.09.002

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	An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy
	Guo, Cean 2; Zhou, Feng 2; Chen, Minghui 1; Wang, Jinlong 1; Zhu, Shenglong 3; Wang, Fuhui 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-04-20
卷号	70 页码:1-11
关键词	Superalloys NiCrAlY coating High-temperature oxidation Elements interdiffusion Diffusion barrier
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.09.002
通讯作者	Chen, Minghui(mhchen@mail.neu.edu.cn)
英文摘要	NiCrAlY coatings are widely applied on various alloy components to enhance oxidation and/or corrosion resistance at high temperatures. However, elements interdiffusion occurs between them due to composition difference. Although various diffusion barriers (DBs) are reported, this problem is still far from completely solved as most ceramic barriers suffer from poor adherence, while the metallic barriers play a limited role. In this study, NiCrAlY coating was deposited onto a second-generation single-crystal superalloy by arc ion plating. A novel simple method is provided to address elements interdiffusion. By pre-oxidation at a moderate temperature, a thin scale of Ni(Co)O forms at the alloy surface. It transforms to be an alumina/NiCoCr alloy/alumina sandwich by an in-situ reaction with the overlaying NiCrAlY coating and the alloy substrate at high service temperatures, which offers good barrier ability in conjunction with strong adhesion. In the presence of such an alumina/alloy/alumina DB, the NiCrAlY coating provides high resistance to oxidation and scale spallation for the alloy substrate. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51671053] ; Natural Science Foundation of Liaoning Province of China[2019-ZD-0264] ; Ministry of Industry and Information Technology Project[MJ-2017-J-99]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000621862300001
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province of China ; Ministry of Industry and Information Technology Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161192]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Minghui
作者单位	1.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China 2.Shenyang Ligong Univ, Sch Equipment Engn, Shenyang 110159, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guo, Cean,Zhou, Feng,Chen, Minghui,et al. An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,70:1-11.
APA	Guo, Cean,Zhou, Feng,Chen, Minghui,Wang, Jinlong,Zhu, Shenglong,&Wang, Fuhui.(2021).An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,70,1-11.
MLA	Guo, Cean,et al."An in-situ formed ceramic/alloy/ceramic sandwich barrier to resist elements interdiffusion between NiCrAlY coating and a Ni-based superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 70(2021):1-11.