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NiCrAlY/NiAl/ZrO2-Y2O3 thermal barrier coatings obtained by detonation spraying
Wu, YN; Ke, PL; Sun, C; Hua, WG; Wang, FH; Wen, LS
Corresponding AuthorWu, YN(ynwu@imr.ac.cn)
2004-05-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume40Issue:5Pages:541-545
AbstractIn order to improve the oxidation resistance of thermal barrier coatings (TBCs), Ni25Cr-5AI-0.5Y/Ni-50Al/ZrO2-8Y(2)O(3) (mass fraction, %) system was deposited on the alloy M22 by detonation spray. Detonation sprayed Ni-50Al (NiAl) layer, as a diffusion barrier layer, is composed of delta-Ni2Al3, beta-NiAl and NiAl3- Isothermal oxidation tests were carried at 1050, 1100 and 1150 degreesC, in order to study the effect of NiAl layer on the growth mechanism of oxidation film. The results indicate that the mass gains of the triplex TBCs are obviously less than those of duplex TBCs at the above temperatures. The oxidation kinetics of triplex TBCs obeys the fourth power law at 1050 and 1100 degreesC, and the parabolic law at 1150 degreesC. NiAl layer can hinder the outward diffusion of elements in the bond coat and promote the formation of TGO consisted of Al2O3.
Keywordthermal barrier coating oxidation resistance detonation spray NiAl diffusion barrier layer
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000221838900020
PublisherSCIENCE CHINA PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81377
Corresponding AuthorWu, YN
AffiliationChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wu, YN,Ke, PL,Sun, C,et al. NiCrAlY/NiAl/ZrO2-Y2O3 thermal barrier coatings obtained by detonation spraying[J]. ACTA METALLURGICA SINICA,2004,40(5):541-545.
APA Wu, YN,Ke, PL,Sun, C,Hua, WG,Wang, FH,&Wen, LS.(2004).NiCrAlY/NiAl/ZrO2-Y2O3 thermal barrier coatings obtained by detonation spraying.ACTA METALLURGICA SINICA,40(5),541-545.
MLA Wu, YN,et al."NiCrAlY/NiAl/ZrO2-Y2O3 thermal barrier coatings obtained by detonation spraying".ACTA METALLURGICA SINICA 40.5(2004):541-545.
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