• 文献标题:   Tribological Properties of Aluminium Alloy Composites Reinforced with Multi-Layer Graphene-The Influence of Spark Plasma Texturing Process
  • 文献类型:   Article
  • 作  者:   KOSTECKI M, WOZNIAK J, CYGAN T, PETRUS M, OLSZYNA A
  • 作者关键词:   aluminium matrix composite, multilayer graphene, sps sintering, tribological propertie
  • 出版物名称:   MATERIALS
  • ISSN:   1996-1944
  • 通讯作者地址:   Warsaw Univ Technol
  • 被引频次:   6
  • DOI:   10.3390/ma10080928
  • 出版年:   2017

▎ 摘  要

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.