Friction and wear properties of graphite/glassy carbon composites

This paper describes the results of an experimental study of the friction a nd wear properties of graphite/glassy carbon (G/GC) composites. The frictio nal tests were performed in ambient air with a pin-on-disk friction apparat us. When the composition of graphite and glassy carbon was changed, the G/G C composite with 34 vol.% graphite content showed the lowest friction coeff icient (mu=0.13) and that with 24 vol.% graphite content showed the lowest specific wear amount (W-s=2 X 10(-7) mm(3)/Nm) at this test conditions. Com pared with graphite and glassy carbon, G/GC composites showed lower frictio n coefficients and lower specific wear amounts. Consequently, G/GC composit es are expected to be useful as self-lubricating materials. (C) 2000 Elsevi er Science S.A. All rights reserved.