Element diffusion and interface characteristics between NiCrAlY coating and Ni-base single crystal superalloy

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	Element diffusion and interface characteristics between NiCrAlY coating and Ni-base single crystal superalloy
	Li, MH ; Sun, XF ; Zhang, ZY ; Hu, WY
刊名	RARE METAL MATERIALS AND ENGINEERING
	2004
卷号	33 期号:1 页码:55-58
关键词	NiCrAlY coating Ni-base single crystal superalloy interdiffusion microstructure
ISSN号	1002-185X
通讯作者	Li, MH(mhli@imr.ac.cn)
英文摘要	A NiCrAlY coating was deposited on a Ni-base superalloy substrate by magnetron sputtering. The elemental diffusion and the microstructural change in the interface zone between the NiCrAlY coating and the substrate were investigated. It was shown that the elemental distribution in the as-sputtered NiCrAlY coating was homogeneous and had an abrupt change at the interface between the substrate and coating. During vacuum heat treatment, microstructure changed and a phase transformation took place in the coating because of interdiffusion between the substrate and coating. An interdiffusion layer (outer and inner diffusion layer) appeared and two new phases, gamma-Ni3Al and alpha-Cr, emerged from local Cr-rich regions in the coating. After 200h oxidation at 1000 degreesC, the interdiffusion layer thickened, beneath which diffusion influence layer emerged because of the further diffusion of elements. Ta replaced some of the Al in the gamma-Ni3Al phase, resulting in an increase of the lattice parameter alpha(0) of gamma phase.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000188932200014
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/119213]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, MH
作者单位	1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.Hunan Univ, Changsha 410082, Peoples R China
推荐引用方式 GB/T 7714	Li, MH,Sun, XF,Zhang, ZY,et al. Element diffusion and interface characteristics between NiCrAlY coating and Ni-base single crystal superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,2004,33(1):55-58.
APA	Li, MH,Sun, XF,Zhang, ZY,&Hu, WY.(2004).Element diffusion and interface characteristics between NiCrAlY coating and Ni-base single crystal superalloy.RARE METAL MATERIALS AND ENGINEERING,33(1),55-58.
MLA	Li, MH,et al."Element diffusion and interface characteristics between NiCrAlY coating and Ni-base single crystal superalloy".RARE METAL MATERIALS AND ENGINEERING 33.1(2004):55-58.