Mechanical properties and wear behavior of copper matrix composites reinforced by Cu-coated graphite and nano-SiC particles
The (Cu-coated Gr+nano-SiCp)/Cu matrix composites with different volume fraction of graphite particles were successfully fabricated by hot pressing and hot extruding.The mechanical properties of extruded samples are much higher than the sintered samples due to high density, dispersion distribution and dislocation strengthening mechanism.The tensile strength of (Gr+nano-SiCp)/Cu composites is higher than composites without nano-SiCp reinforcements, which is attributed to the dispersion strengthening and grain refining strengthening mechanisms.The mechanical and electrical properties of extruded samples is gradually decreased with the increasing volume fraction of Cu-coated graphite particles, and the composites with Cu coated graphite particles have higher mechanical properties than the composites with graphite particles.The wear properties of (Cu-coated Gr+nano-SiCp)/Cu composites are gradually increased with the increase of volume fraction of graphite particles, which is due to the slight wear mechanism with complete lubricant film formed by graphite particles.
composite materials powder metallurgy electron microscop mechanical testing deformation wear
B.X.Liu G.S.Wang Y.G.Wang L.Geng G.H.Fan X.P.Cui F.X.Yin
Research Institute for Energy Equipment Materials, Hebei University of Technology, TianJin 300132, C School of Materials Science and Engineering, Harbin Institute of Technology, P.O.Box433, Harbin 1500
国内会议
长沙
英文
14-21
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）