| Project/Area Number |
07555521
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
Material processing/treatments
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| Research Institution | Osaka University |
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Principal Investigator |
MIYAKE Shoji Osaka University, Joining & Welding Research Institute, Professor, 接合科学研究所, 教授 (40029286)
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| Co-Investigator(Kenkyū-buntansha) |
KOHATA Mamoru Toshiba Tungaloy Co., Ltd., Tool Development Dep., Chief Res.Associate, 切削工具事業部, 主任研究員
OGATA Kiyoshi Nissin Electric Co., Ltd., Basic Res.Dep., Chief Res.Associate, 先端技術研究開発部, 主席研究員
SETSUHARA Yuichi Osaka University, Joining & Welding Research Institute, Res.Associate, 接合科学研究所, 助手 (80236108)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Ion Beam / Ion Beam Assisted Deposition / cBN / Intrefacial Control / Adhesion / Functional Gdadient |
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| Research Abstract |
Boron nitride films were prepared by IBAD with N and/or Ar-mixtured ions. The c-BN films with improved tribological properties has been approached by inserting a B-rich buffer layr as a controlled buffer at the interface. Tribological characterization of the buffer layr indicated that the films with higher B/N transport ratio exhibited the simultaneous achievement of the highest adhesion strength tigether with the highest hardness value. The stoicheometric upper layr with high fraction of c-BN phase could be successfully grown on the B-rich layr formed on various substrates including highspeed-tool steel and WC.The insertion of the buffer layr exhibited the significant effect on the reduction of internal stress of the c-BN films and further on the enhancement of the tribological properties to obtain high hardness simultaneously with high adhesion strength. The double-layred BN films exhibited excellent characteristics in anti-corrosion capability, high-temperature phase stability and chemical innertness against various glass at elevated temperatures.
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