Physical Properties of Diamond Coatings on a WC-6%Co Substrate

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	LIU Sha
	YI Dan-Qing
	YU Zhi-Ming

关键词 ： 81.15.Gh

Abstract： We have investigated the physical properties, including the morphology, texture, adhesion and chemical quality, of high-frequency chemical vapour deposited diamond coatings on WC-6%Co substrates which were pre-treated by a two-step etching method. The results indicate that the increasing Co content from 0.12 to 3.05% within the etching depth of 5μm caused a morphology transformation from prism diamond to spherulitic diamond, and a texture one from a {111} orientation to a {110} orientation. The Raman spectrum shows that the spherulitic diamond film contains more non-diamond phases (graphite, amorphous carbon and diamond-like carbon, etc) and has lower chemical quality of diamond films on a WC-6%Co substrate. The diamond coating grain sizes became smaller about 4 times when the deposition temperatures on the substrate surface were reduced from 1000 to 900°C. Compared with spherulitic diamond films, the prism diamond films exhibit better adhesion on the WC-6%Co substrate.

Key words： 81.15.Gh

出版日期: 2002-03-01

81.15.Gh

(Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))

引用本文:

LIU Sha;YI Dan-Qing;YU Zhi-Ming. Physical Properties of Diamond Coatings on a WC-6%Co Substrate[J]. 中国物理快报, 2002, 19(3): 422-424.
LIU Sha, YI Dan-Qing, YU Zhi-Ming. Physical Properties of Diamond Coatings on a WC-6%Co Substrate. Chin. Phys. Lett., 2002, 19(3): 422-424.

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https://cpl.iphy.ac.cn/CN/ 或 https://cpl.iphy.ac.cn/CN/Y2002/V19/I3/422