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肖文凯,穆迪琨祺,翟显,阮学锋,王国栋.石墨烯强化CuCr25合金的制备与性能[J].稀有金属材料与工程(英文),2017,46(12):3862~3867.[Xiao Wenkai,Mu Dikunqi,Zhai Xian,Ruan Xuefeng,Wang Guodong.Preparation and mechanical properties of graphene reinforced CuCr25 composites[J].Rare Metal Materials and Engineering,2017,46(12):3862~3867.]
Preparation and mechanical properties of graphene reinforced CuCr25 composites
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Received:October 08, 2015  Revised:November 13, 2015
Key words: Composite  CuCr25 alloy  Graphene  Microstructure  Properties
Foundation item:国家自然科学基金(项目号51403223)
Author NameAffiliationE-mail
Xiao Wenkai School of Power and Machanical Engineering,Wuhan University xiaowenkai2003@163.com 
Mu Dikunqi School of Power and Machanical Engineering,Wuhan University 1485299523@qq.com 
Zhai Xian School of Power and Machanical Engineering,Wuhan University  
Ruan Xuefeng Nano Science and Technology Research Centre,Wuhan University  
Wang Guodong School of Power and Machanical Engineering,Wuhan University  
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      Novel graphene reinforced CuCr25 matrix composites (GCMC) with high hardness and conductivity are successfully prepared by spark plasma sintering (SPS) under high pressure and low temperature after low speed ball-milling mix. It is confirmed that the graphene is remained and no new phase is found by X-ray diffraction and Raman spectroscopy. Structural characterization of GCMC is performed using field emission scanning electron microscope(SEM) and energy dispersive spectroscopy(EDS), which reveals that the graphene is homogeneously distributed in matrix after sintering process. The hardness of GCMC with 1wt.% graphene sintered under 300MPa and 600°C is increased by 11.3% than the values of CuCr25 alloys fabricated by the same method, though the conductivity is decreased by 4.2%. Comparing with the CuCr25 alloys consolidated by conventional method, the conductivity and hardness of new-type GCMC are about 1.35 and 1.48 times higher respectively, which indicates that the additional phase and new process all make contributions to the enhancement of GCMC.