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Catalytic graphite mechanism during CVD diamond film on iron and cobalt alloys in CH4-H-2 atmospheres
Li, X. J.1,2; He, L. L.3; Li, Y. S.4; Yang, Q.4
Corresponding AuthorLi, X. J.(lixiaoju@sdu.edu.cn) ; He, L. L.(llhe@imr.ac.cn)
2019-02-25
Source PublicationSURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
Volume360Pages:20-28
AbstractIron and cobalt alloys were exposed to a CH4-H-2 mixture at about 670 degrees C during the chemical vapor deposition (CVD) of diamond film. Severe carburization is observed on pure Fe and Co-10Al alloy, resulting voluminous graphite preferentially formed before diamond deposition. To clarify the catalytic graphite mechanism, microstructures and compositions around the substrates-graphite interfacial region have been comprehensively analyzed by transmission electron microscopy (TEM). Severe internal carburization on pure Fe leads to a metastable Fe3C carbide layer formed and then decomposed, finally resulting in the precipitation of graphite. Meanwhile, graphitization also occurs on low-Al alloy (Co-10Al), the graphite is precipitated from AICo(3)C carbide as substrate carburization occurs. As a comparison, such a graphite interlayer is inhibited when the substrate carburization is effectively hindered on high-Al alloys (Fe-25Al, Co-30Al), attributed to the protection of an alumina-rich layer on the alloy surface.
KeywordGraphite Carburization CVD diamond film TEM Iron and cobalt alloys
Funding Organizationprogram of Department of Education of Jilin Province ; National Basic Research Program of China ; Canada Research Chairs Program ; Natural Sciences and Engineering Research Council of Canada (NSERC)
DOI10.1016/j.surfcoat.2018.12.120
Indexed BySCI
Language英语
Funding Projectprogram of Department of Education of Jilin Province[2016331] ; National Basic Research Program of China[2011CB605803] ; National Basic Research Program of China[2011CB605604] ; Canada Research Chairs Program ; Natural Sciences and Engineering Research Council of Canada (NSERC)
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
WOS IDWOS:000458226700003
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131827
Collection中国科学院金属研究所
Corresponding AuthorLi, X. J.; He, L. L.
Affiliation1.Shandong Univ, State Key Lab Microbial Technol, 72 Binhai Rd, Qingdao 26623Z, Peoples R China
2.Changchun Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Struct Mat, Minist Educ, Changchun 130012, Jilin, Peoples R China
3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
4.Univ Saskatchewan, Dept Mech Engn, Saskatoon, SK S7N 5A9, Canada
Recommended Citation
GB/T 7714
Li, X. J.,He, L. L.,Li, Y. S.,et al. Catalytic graphite mechanism during CVD diamond film on iron and cobalt alloys in CH4-H-2 atmospheres[J]. SURFACE & COATINGS TECHNOLOGY,2019,360:20-28.
APA Li, X. J.,He, L. L.,Li, Y. S.,&Yang, Q..(2019).Catalytic graphite mechanism during CVD diamond film on iron and cobalt alloys in CH4-H-2 atmospheres.SURFACE & COATINGS TECHNOLOGY,360,20-28.
MLA Li, X. J.,et al."Catalytic graphite mechanism during CVD diamond film on iron and cobalt alloys in CH4-H-2 atmospheres".SURFACE & COATINGS TECHNOLOGY 360(2019):20-28.
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