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Oxidation and cracking behaviors of triple-layered Cr2AlC coating
Li, Jingjing1; Xiang, Huimin2; Xu, Jingjun3; Zheng, Lili4; Qian, Yuhai5
Corresponding AuthorLi, Jingjing(jjli@alum.imr.ac.cn)
2021-09-25
Source PublicationSURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
Volume422Pages:8
AbstractCr2AlC coating has potential applications as high temperature protective coating. However, inevitable inter-diffusion at coating/substrate interface promotes Al depletion and deteriorates its oxidation resistance. In the present work, the oxidation behavior of a triple-layered Cr2AlC coating, with (Cr,Al)(2)O-3 inner layer, amorphous intermediate layer and crystalline Cr2AlC outer layer, was investigated at 900 and 1000 degrees C in air. The effect of the (Cr,Al)(2)O(3 )inner layer as diffusion barrier was evaluated during the oxidation process. It is showed that the triple-layered Cr2AlC coating could effectively improve the oxidation resistance of the M38G alloy substrate, due to the Cr2AlC outer layer. The (Cr,Al)(2)O-3 inner layer could prohibit internal nitridation and retard interdiffusion at the coating/substrate interface, improving oxidation resistance of the triple-layered Cr2AlC coating. Furthermore, cracking of the triple-layered Cr2AlC coating was found after oxidation at 900 and 1000 degrees C, due to the thermal stress and internal stress introduced by intermediate amorphous layer crystallization during oxidation.
KeywordCr2AlC coating Oxidation Diffusion barrier Cracking Internal stress evolution
Funding OrganizationNational Natural Science Foundation of China ; Shenyang Ligong University High Level Talents Research Support Plan
DOI10.1016/j.surfcoat.2021.127554
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[52071318] ; Shenyang Ligong University High Level Talents Research Support Plan[1010147000901]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
WOS IDWOS:000685607200054
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159239
Collection中国科学院金属研究所
Corresponding AuthorLi, Jingjing
Affiliation1.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China
2.Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Qingdao Univ, Coll Mech & Elect Engn, Natl Engn Res Ctr Intelligent Elect Vehicle Power, Qingdao 266071, Peoples R China
5.Aluminum Valley Ind Technol Inst, Zouping 256200, Peoples R China
Recommended Citation
GB/T 7714
Li, Jingjing,Xiang, Huimin,Xu, Jingjun,et al. Oxidation and cracking behaviors of triple-layered Cr2AlC coating[J]. SURFACE & COATINGS TECHNOLOGY,2021,422:8.
APA Li, Jingjing,Xiang, Huimin,Xu, Jingjun,Zheng, Lili,&Qian, Yuhai.(2021).Oxidation and cracking behaviors of triple-layered Cr2AlC coating.SURFACE & COATINGS TECHNOLOGY,422,8.
MLA Li, Jingjing,et al."Oxidation and cracking behaviors of triple-layered Cr2AlC coating".SURFACE & COATINGS TECHNOLOGY 422(2021):8.
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