Wear behavior of graphene/alumina composite |
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| Affiliation: | 1. Centro de Investigación en Nanomateriales y Nanotecnología (CINN). [Principado de Asturias - Consejo Superior de Investigaciones Científicas (CSIC) – Universidad de Oviedo (UO)], Avenida de la Vega, 4–6, 33940, El Entrego (Asturias), Spain;2. Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), C/ Sor Juana Inés de la Cruz, 3, 28049 Madrid, Spain;3. Graphenea S.A., Tolosa Hiribidea 76, E-20018 Donostia-San Sebastián, Spain;4. ITMA Materials Technology, Parque Tecnológico de Asturias, 33428 Llanera, Spain;5. Moscow State University of Technology “STANKIN”, Vadkovskij per. 1, Moscow, Moscow Oblast, Russia;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050, China;3. Univerisity of Chinese Academy of Sciences, Beijing 100049, China;1. Hybrid Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;2. Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan;1. Northumbria University, Faculty of Engineering and Environment, Department of Mechanical and Construction Engineering, Newcastle upon Tyne NE1 8ST, United Kingdom;2. National Institute of Technology Karnataka, Department of Chemistry, Catalysis and Materials Laboratory, Surathkal, Srinivasanagar 575025, India |
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| 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. |
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| Keywords: | A Sintering B Nanocomposites C Wear resistance Graphene |
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