Wear behavior of graphene/alumina composite

By C. Gutiérrez-González, A. Smirnov, A. Centeno, Adolfo Fernández, B. Alonso, V. G. Rocha, R. Torrecillas, A. Zurutuza, J. Bartolomé. 2015

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In the present work, the dry sliding behavior of a graphene/alumina composite material was studied against alumina in air. The tests were carried out in a reciprocating wear tester with an applied load of 20 N, a sliding speed of 0.06 m s−1 and a sliding distance of up to 10 km. Under the testing conditions, the graphene/ceramic composite showed approximately half the wear rate and a 10% lower friction coefficient than the monolithic alumina. It has been found that this behavior is related to the presence of graphene platelets adhered to the surface of friction that form a self-lubricating layer which provides enough lubrication in order to reduce both wear rate and friction coefficient, as compared to the alumina/alumina tribological system.

Subfields: Materials Chemistry, Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/f3016d8f22f4f650bbe263284735b78d79d7f0ca