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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
Corresponding AuthorLi, MH(mhli@imr.ac.cn)
2004
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume33Issue:1Pages:55-58
AbstractA 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.
KeywordNiCrAlY coating Ni-base single crystal superalloy interdiffusion microstructure
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000188932200014
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/119214
Collection中国科学院金属研究所
Corresponding AuthorLi, MH
Affiliation1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
2.Hunan Univ, Changsha 410082, Peoples R China
Recommended Citation
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.
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