Clarification of conditions for ultra-low friction
| Project/Area Number |
21560160
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo University of Agriculture and Technology (2010-2011)
National Institute of Advanced Industrial Science and Technology (2009) |
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Principal Investigator |
ANDO Yasuhisa 東京農工大学, 大学院・工学研究院, 教授 (00344169)
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| Co-Investigator(Renkei-kenkyūsha) |
HIRATSUKA Ken' ichi 千葉工業大学, 工学部, 教授 (30181168)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | トライボロジー / 摩擦係数 / 原子間隔 / 摩擦の異方性 / シリコン / 多結晶金属 / 単結晶金属 / 凝着力 / 自然酸化膜 |
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| Research Abstract |
The friction coefficients of different metal pairs are determined by the difference in the interatomic distance between each metal material under low load conditions. Here, eight types of metal pins were rubbed against Si(111) substrates that were covered with a native oxide film. Results showed that the friction coefficient increased when the interatomic distance of the metal approached the interatomic distance of SiO_2. A similar relationship was found between pairs of Ag/Cu/Ni and Au/Pt/Si(100). The combination of Au(111) and Si(111) exhibited clear friction anisotropy, which confirmed the above-mentioned relationship that was determined by interaction between the crystal structures.
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Report
(4 results)
Research Products
(18 results)
