Wear behavior of graphene/alumina composite

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 20N, a sliding speed of 0.06ms−1 and a sliding distance of up to 10km. Under the testing condit...

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Bibliographic Details
Published in:Ceramics international 2015-07, Vol.41 (6), p.7434-7438
Main Authors: Gutierrez-Gonzalez, C.F., Smirnov, A., Centeno, A., Fernández, A., Alonso, B., Rocha, V.G., Torrecillas, R., Zurutuza, A., Bartolome, J.F.
Format: Article
Language:English
Subjects:
A. Sintering
Aluminum oxide
B. Nanocomposites
C. Wear resistance
Ceramics
D. Al2O3
Friction
Graphene
Sliding
Tribology
Wear
Wear rate
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Summary: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 20N, a sliding speed of 0.06ms−1 and a sliding distance of up to 10km. 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.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2015.02.061