| 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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| 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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