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Microstructure and initial stage oxidation of NiCoCrAlY coatings deposited by arc ion plating technique
Sun, C; Wang, QM; Tang, YJ; Guan, QF; Gong, J; Wen, LS
Corresponding AuthorSun, C(csun@imr.ac.cn)
2005-11-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume41Issue:11Pages:1167-1173
AbstractThe microstructure of the NiCoCrAlY coatings deposited by arc ion plating (AIP) and its oxidation mechanism at initial stage were investigated by XRD, SEM, TEM and photostimulated luminescence spectroscopy (PSLS). The results showed that as-deposited NiCoCrAlY coatings were composed of nano-grains and possessed apparent layered structure. After vacuum annealing, the layered microstructure disappeared and the coating became much denser. The nano-grains in the coatings became much larger and twinned grains appeared. In addition, a very thin oxide scale mainly of alpha-Al2O3 formed on the coating surface after annealing. In the subsequent initial oxidation stages, transient theta-Al2O3 increased and then turned into stable alpha-Al2O3. The related mechanism was also discussed.
KeywordNiCoCrAlY coating arc ion plating microstructure oxidation mechanism
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000233702000009
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82545
Corresponding AuthorSun, C
Affiliation1.Chinese Acad Sci, Inst Met Res, Div Surface Engn Mat, Shenyang 110016, Peoples R China
2.Jilin Univ, Sch Mat, Changchun 130025, Peoples R China
Recommended Citation
GB/T 7714
Sun, C,Wang, QM,Tang, YJ,et al. Microstructure and initial stage oxidation of NiCoCrAlY coatings deposited by arc ion plating technique[J]. ACTA METALLURGICA SINICA,2005,41(11):1167-1173.
APA Sun, C,Wang, QM,Tang, YJ,Guan, QF,Gong, J,&Wen, LS.(2005).Microstructure and initial stage oxidation of NiCoCrAlY coatings deposited by arc ion plating technique.ACTA METALLURGICA SINICA,41(11),1167-1173.
MLA Sun, C,et al."Microstructure and initial stage oxidation of NiCoCrAlY coatings deposited by arc ion plating technique".ACTA METALLURGICA SINICA 41.11(2005):1167-1173.
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