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鲁宁宁,许 磊,历长云,王有超,米国发,杨二阔.热压烧结Gr/6061Al复合材料制备与组织性能研究[J].稀有金属材料与工程(英文),2019,48(6):1961~1968.[Lu Ningning,Xu Lei,Li Changyun,Wang Youchao,Mi Guofa and Yang Erkuo.Reach of the preparation, Microstructure and Properties of Gr / 6061Al Composites sintered by Hot Pressing Sintering[J].Rare Metal Materials and Engineering,2019,48(6):1961~1968.]
Reach of the preparation, Microstructure and Properties of Gr / 6061Al Composites sintered by Hot Pressing Sintering
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Received:January 12, 2018  Revised:March 20, 2018
DOI:
Key words: Graphite sheet  Aluminum matrix composite  Relatively density  Wear rate  Coefficient of friction
Foundation item:国家自然科学基金资助(项目号51401077)
Author NameAffiliation
Lu Ningning,Xu Lei,Li Changyun,Wang Youchao,Mi Guofa and Yang Erkuo  
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Abstract:
      The graphite sheet (Gr)/6061Al composites with Gr content of 1~25vol.% were prepared by vacuum hot-pressure sintering. The nano-aluminum powders were adopted as cladding materials on the surface of graphite sheet to improve the dispersal uniformity of graphite sheet within aluminum matrix. The graphite sheet dispersed uniformly in the aluminum matrix, and the interface between aluminum and Gr was well integrated without interfacial reaction product being found. The presence of few layer graphene was observed by transmission electron microscopy (TEM). The relative densities of the Gr/6061Al composites with 1~15vol% Gr content are all higher than 90%. The relative densities of the samples were decreased with the increasing of graphite content; and the coefficient of friction(COF) of the samples possess the same trend. The wear rate of the samples with Gr content of 5vol.%, 10vol.%, 15vol.% and 25vol.% are all higher than that with 1vol.% Gr content.An experimental set-up was designed for measuring the self-field losses of Bi2223/Ag HTS tapes using a transport current method.