青岛科技大学  English 
马伯江
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教师拼音名称:mabojiang

职称:教授

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Hot-filament chemical vapor deposition of amorphous carbon film on diamond grits and induction brazing of the diamond grits

关键字:Diamond; Hot-filament chemical vapor deposition; Induction brazing; Sharpness; Bonding strength; Chromium carbide

摘要:The production of a high-quality brazed diamond tool has gradually drawn the attention of the tool industry. Hot-filament chemical vapor deposition (CVD) of amorphous carbon film on diamond grits was conducted. The deposited diamond grits were used to make brazed diamond tools by induction heating. Amorphous carbon film (1-2 mu m thick) was deposited onto the diamond surface. The diamond grits protruding from the filler alloy maintain their sharpness after induction brazing of the deposited diamond grits. Discontinuous irregular carbides are distributed evenly on the brazed diamond surface in the filler alloy. This considerably enhances the bonding strength between the filler alloy and diamond grits. Grinding tests of the brazed diamond wheels show a low percentage of pullouts from the matrix and whole grain fracture for the deposited diamond grits brazed by induction heating. (C) 2012 Elsevier B.V. All rights reserved.

卷号:258

期号:10

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