| Project/Area Number |
26340101
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Design and evaluation of sustainable and environmental conscious system
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
崔 龍範 広島大学, 工学研究院, 助教 (00457269)
佐々木 元 広島大学, 工学研究院, 教授 (30192595)
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| Co-Investigator(Renkei-kenkyūsha) |
Zu Zhefeng 広島大学, 工学研究院, 助教 (70620863)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 鉄ホウ化物放電焼結 / 環境対応合金 / 焼結メカニズム / 難焼結粉末 / 切削特性 / 難焼結材料 / 鉄ほう化物 / 放電焼結 / 代替切削工具 / 焼結速度 / Ni無電解めっき / 鉄ホウ化物 |
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| Outline of Final Research Achievements |
The development of hard tools has been carried out using ubiquitously FeB system powders as alternative materials of WC-Co. Uniform Ni layers were formed quantitatively on FeB, MoS2 powders. It is clear that relation among powders-compositions-microstructures-properties-process parameters. The sintering curves of the 25Ni powders were between those of pure FeB and Ni. The maximum densification rate in the 25Ni was achieved at 0.79 density, which was higher than that of the pure FeB and close to that of Ni. The change in densification mechanism occurred at the maximum densification rate (7.3x10-4 s-1). The increase in maximum temperature led to improvement in hardness, compressive and toughnesss, which resulted from the increase in density due to the activation of diffusion. The flank wear width was 0.28 mm at 30 m length under interrupted cutting, for the work material of Ti-6Al-4V using tools of FeB-10Ni and WC, which meant the satisfaction for its standard of 0.3 mm as the life.
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