Wear behavior of graphene/alumina composite. Issue 6 (July 2015)

• Record Type: Journal Article
• Authors: Gutierrez-Gonzalez, C.F.; Smirnov, A.; Centeno, A.; Fernández, A.; Alonso, B.; Rocha, V.G.; Torrecillas, R.; Zurutuza, A.; Bartolome, J.F.
• Is Part Of: Ceramics international. Volume 41:Issue 6(2015)
• Page Start: 7434
• Page End: 7438
• Publication Date: 2015-07
• Subjects: A. Sintering -- B. Nanocomposites -- C. Wear resistance -- D. Al2O3 -- Graphene; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2015.02.061
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: 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.