摘要:
本文研究用冷压成型、高温烧结粉末冶金方法制造非连续碳纤维增强铜基复合材料的工艺,制成了碳纤维的体积含量范围为10-40%的碳铜复合体。通过正交实验,分析了多种因素对碳铜复合材料制作工艺的影响,确定了烧结温度为显著因子,并认为基体中锡的加入造成液相活化烧结,有利于提高复合材料的性能,筛选出来的优化工艺为:碳纤维的体积含量Vf=10-30%,成型压力P=3吨/厘米2,烧结温度T=950℃,基体内含锡5%。实验表明:单独依靠冷压、烧结难以得到Vf大,致密度高的碳铜复合材料,文章最后就如何采取后续工艺提高冷压烧结碳铜复合材料的性能提出了一些看法。
Abstract:
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; Vf=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.
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