1993•Applied Physics LettersRequires access

Very low friction for diamond sliding on diamond in water

Yonhua Tzeng

Abstract

This letter reports the lowest coefficient of friction measured for diamond sliding on diamond. When a natural diamond stylus with a spherical tip about 50 μm in diameter slides on a polished polycrystalline chemically vapor deposited diamond film in water at a speed of 0.05 mm/s under a load of 50 g, the coefficient of friction falls to ∼0.001. This clearly shows the effectiveness of water for lubricating diamond sliding on diamond.

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Key concepts: Diamond, Materials science, Stylus, Polycrystalline diamond, Friction coefficient, Material properties of diamond, Composite material, Physics