Figure. (IMAGE)
Caption
Changes in the friction coefficient of mica when changing sliding velocity (V); Changes in the friction coefficient are large at low temperature, while the friction coefficient becomes irrelevant to changes in sliding velocity at high temperature. At low temperature, there are defects within crystals slightly away from the friction surface, and the sliding friction of the defects depends on sliding velocity, but at high temperature, defects disappear and the friction coefficient becomes irrelevant to sliding velocity.
Credit
Hiroshi Sakuma (National Institute for Materials Science)
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