FABRICATING CARBON FIBER REINFORCED COPPER MATRIX COMPOSITES BY COLD PRESSING-SINTERING

A technique of making discontiaous carbon fiber reinforced copper matrix composites was studiEd. The C-Cu composites with carbon fiber volume content ranging from 10% to 40% were made by cold pressing followed by sinterin-a method of powder metallurgy. With a factorial experiment,the effect of some factors on the process of making C-Cu composites vas discussed.It has been found that the SiatEring temperature is an important factor and the addition of Sn to the matrix has good effect ca the properties of the composites, due to the liquid phase type sintering, The optimum condition is as follaws; V_f=10-30%, P=3 ton per cm²,T=950℃,Sn=5%.It is difficult to make high carbon fiber volume content and dense C-Gu Composites, if only using the cold pressing-sintering method.Finally, it was proposed how to promote the properties of C-Gu composites by the use of some post processes.