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Tribological Properties of Aluminium Alloy Composites Reinforced with Multi-Layer Graphene—The Influence of Spark Plasma Texturing Process

Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska St. 141, 02-507 Warsaw, Poland
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Materials 2017, 10(8), 928; https://doi.org/10.3390/ma10080928
Received: 28 June 2017 / Revised: 4 August 2017 / Accepted: 5 August 2017 / Published: 10 August 2017
(This article belongs to the Section Energy Materials)
Self-lubricating composites are designed to obtain materials that reduce energy consumption, improve heat dissipation between moving bodies, and eliminate the need for external lubricants. The use of a solid lubricant in bulk composite material always involves a significant reduction in its mechanical properties, which is usually not an optimal solution. The growing interest in multilayer graphene (MLG), characterised by interesting properties as a component of composites, encouraged the authors to use it as an alternative solid lubricant in aluminium matrix composites instead of graphite. Aluminium alloy 6061 matrix composite reinforced with 2–15 vol % of MLG were synthesised by the spark plasma sintering process (SPS) and its modification, spark plasma texturing (SPT), involving deformation of the pre-sintered body in a larger diameter matrix. It was found that the application of the SPT method improves the density and hardness of the composites, resulting in improved tribological properties, particularly in the higher load regime. View Full-Text
Keywords: aluminium matrix composites; multilayer graphene; SPS sintering; tribological properties aluminium matrix composites; multilayer graphene; SPS sintering; tribological properties
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Kostecki, M.; Woźniak, J.; Cygan, T.; Petrus, M.; Olszyna, A. Tribological Properties of Aluminium Alloy Composites Reinforced with Multi-Layer Graphene—The Influence of Spark Plasma Texturing Process. Materials 2017, 10, 928.

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