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Effect of substrate characteristics on interdiffusion coefficients of Ni and Al atoms in beta-NiAl phase of aluminide coatings
Wei, H; Sun, XF; Zheng, Q; Hou, GC; Guan, HR; Hu, ZQ
Corresponding AuthorWei, H(hwei@imr.ac.cn)
2004-03-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume20Issue:2Pages:196-198
AbstractInterdiffusion coefficients at 950degreesC and 1050degreesC are calculated by Wagner analysis method as a function of composition of beta-NiAl phase. The beta-NiAl phase is formed by pack cementation on surface of superalloy. Results of the calculation show that interdiffusion coefficients in beta-NiAl phase strongly depend on the compositions and vary over several orders of magnitude. Compared with the interdiffusion coefficients in the stoichiometric beta-NiAl phase, the interdiffusion coefficients in beta-NiAl phase formed on superalloy is obviously small, probably due to the composition, complicated microstructure and precipitates. However, it could be seen clearly that the shapes of the diffusivity curves are very similar to each other. The similarity of the diffusion curves and the difference between interdiffusion coefficients imply that the compositions, microstructures and precipitates of superalloy have a distinctly adverse effect on the interdiffusion of Ni and Al atoms during aluminization, but do not change the essential characteristics of beta-NiAl phase.
Keywordaluminide coating pack cementation beta-NiAl phase aluminization interdiffusion coefficient
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000220705300019
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81518
Collection中国科学院金属研究所
Corresponding AuthorWei, H
AffiliationChinese Acad Sci, Met Res Inst, Shenyang, Peoples R China
Recommended Citation
GB/T 7714
Wei, H,Sun, XF,Zheng, Q,et al. Effect of substrate characteristics on interdiffusion coefficients of Ni and Al atoms in beta-NiAl phase of aluminide coatings[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2004,20(2):196-198.
APA Wei, H,Sun, XF,Zheng, Q,Hou, GC,Guan, HR,&Hu, ZQ.(2004).Effect of substrate characteristics on interdiffusion coefficients of Ni and Al atoms in beta-NiAl phase of aluminide coatings.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,20(2),196-198.
MLA Wei, H,et al."Effect of substrate characteristics on interdiffusion coefficients of Ni and Al atoms in beta-NiAl phase of aluminide coatings".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 20.2(2004):196-198.
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