Fabrication of C/Cu composites by mechanical activation and spark plasma sintering
C/Cu self-lubricating composites were a kind of potentially functional materials.Nanostructured C/Cu composites were prepared by the new technology of mechanical activation-spark plasma sintering (MA-SPS).Microstructures of the as-milled powder and the as-sintered simple were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD),respectively.These investigations indicated that in Cu-C immiscible system,the nanostructured supersaturated solid solution of carbon in copper was formed at atomic level after milling for 24 h.Microstructures of SPS sintered C/Cu composites still kept the nanostructure.In addition,Cu-C interface bonding was good.It was ascribed to a double activation mechanism in the MA-SPS process,which improved the sintering activity of C/Cu powders.Nanostructured C/Cu composites were obtained by SPS sintered at 600 ℃ for 3 min.
C/Cu composites mechanical activation spark plasma sintering supersaturated solid solution
X.R.LIU Y.B.LIU Y.SUN G.H.SU
Department of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, China Department of Materials Science and Engineering, Jilin University, Changchun 130025, China
国际会议
杭州
英文
223-226
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）