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Isothermal oxidation behavior and microstructure change of a gradient low-expansion coating for superalloys
Ren, Pan1; Zhu, Shenglong2; Wang, Fuhui3
Corresponding AuthorRen, Pan(renp@foxmail.com)
2019-02-01
Source PublicationCORROSION SCIENCE
ISSN0010-938X
Volume147Pages:182-191
AbstractAn AlN gradient-doped Ni + CrAlYSiHfN coating was prepared on superalloys by magnetron sputtering. The as-deposited coating comprised of three sub-layers. AlN phase shows a gradient distribution in coating after annealing, and AlN reaches 33 vol.% at the top of the coating. Compared with NiCrAlY coating, the gradient coating reduced the CTEs mismatch between coating and alpha-Al2O3 by 41%, and it exhibited a much lower oxidation rate in oxidation test. A thin Cr23C6 diffusion barrier formed at the coating-substrate interface. In summary, the gradient coating effectively reduces the damage of thermal stress on oxide scale, and suppressed the interdiffusion between coating and substrate.
KeywordOxidation Gradient coating High-temperature protection Diffusion barrier
Funding OrganizationNational Nature Science Foundation of China ; Guangdong Provincial Natural Science Foundation for Doctoral Research Project ; Fundamental Research Funds for the Central Universities ; Scientific Research Funds for the Talents and Innovation Foundation of Jinan University, Guangzhou, China
DOI10.1016/j.corsci.2018.11.004
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China ; Guangdong Provincial Natural Science Foundation for Doctoral Research Project[2017A030310473] ; Fundamental Research Funds for the Central Universities[21617339] ; Scientific Research Funds for the Talents and Innovation Foundation of Jinan University, Guangzhou, China
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000456902100016
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131405
Collection中国科学院金属研究所
Corresponding AuthorRen, Pan
Affiliation1.Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, Shenyang, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Ren, Pan,Zhu, Shenglong,Wang, Fuhui. Isothermal oxidation behavior and microstructure change of a gradient low-expansion coating for superalloys[J]. CORROSION SCIENCE,2019,147:182-191.
APA Ren, Pan,Zhu, Shenglong,&Wang, Fuhui.(2019).Isothermal oxidation behavior and microstructure change of a gradient low-expansion coating for superalloys.CORROSION SCIENCE,147,182-191.
MLA Ren, Pan,et al."Isothermal oxidation behavior and microstructure change of a gradient low-expansion coating for superalloys".CORROSION SCIENCE 147(2019):182-191.
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