Mechanism of Thermochemical-Mechanical Reactions between Nano-Polycrystalline Diamond and Polycrystalline Diamond Disk Generated under Dry Grinding
| Project/Area Number |
23360071
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Fukuoka Institute of Technology |
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Principal Investigator |
SEMBA Takuya 福岡工業大学, 工学部, 教授 (30154678)
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| Co-Investigator(Kenkyū-buntansha) |
AMAMOTO Yoshifumi 福岡工業大学, 工学部, 助教 (00505670)
FUJIYAMA Hirokazu 福岡工業大学, 工学部, 教授 (50148912)
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| Project Period (FY) |
2011-11-18 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
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| Keywords | ナノマイクロ加工 / ナノ多結晶ダイヤモンド / 焼結ダイヤモンド / 遷移金属 / 熱化学反応 / マイクロナノ加工 / 超精密加工 / 高硬度金型材料 / 電気陰性度 / 標準自由エネルギー |
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| Research Abstract |
A polycrystalline diamond (PCD) disk, in which the cobalt (Co) commonly used as a sintering aid is replaced with a transition metal or a high-specific-heat material, was used as a truer, and dry grinding of a laser-preformed rake face of a radius-cutting tool made of nano-polycrystalline diamond (NPD) was conducted to clarify the mechanism by which a chip is removed from the rake face. The grinding test revealed that the surface roughness decreased with increasing specific heat capacity of the material replacing the Co when the heat-damaged layer, in which the diamond structure was transformed to that of graphite, was removed by diamond grains on the working surface of the truer. A ground surface roughness of 0.5 nm Rz was obtained when the truer with Co replaced by boron carbide (B4C) was employed.
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Report
(4 results)
Research Products
(44 results)
