采用粉末冶金法制备了多层石墨烯/银电接触复合材料，并系统研究了多层石墨烯含量对多层石墨烯/银复合材料微观组织、导电率、硬度及电弧侵蚀的影响。结果表明，复合材料密度随多层石墨烯含量的增加而减小。多层石墨烯含量为0.5%的石墨烯/银复合材料具有最佳的导电率，为84.5% IACS。当多层石墨烯含量高于2.0%以后，复合材料硬度降低幅度明显增大。多层石墨烯含量为1.5%的多层石墨烯/银电接触复合材料表现出最优异的抗电弧侵蚀性能。
Multilayer graphene/silver electrical contact composites were prepared by powder metallurgy. Effects of multilayer graphene content on the microstructure, electrical conductivity, hardness and arc erosion of the multilayer graphene/silver composites were studied in details. Results show that the densities of the green and sintered composites decrease with increasing the multilayer graphene content. The highest electrical conductivity value of 84.5% IACS can be accomplished when the content of the multilayer grapheme is 0.5% in reinforced composite. When the amount of the multilayer graphene is higher than 2.0%, the declining rate in hardness significantly increases. The multilayer graphene/silver electrical contact composites with 1.5% the multilayer grapheme displays the best anti-arc erosion performance.
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