摘要
采用无压熔渗方法制备炭纤维整体织物/炭-铜(C/C-Cu)复合材料,在MM-2000型环-块摩擦磨损试验机上考察复合材料的摩擦磨损性能,利用扫描电子显微镜观察分析磨损表面形貌,研究C/C坯体对材料的摩擦磨损行为的影响及机制。结果表明:随着C/C坯体密度的增加,摩擦系数及C/C-Cu材料自身和对偶的磨损量均降低;采用浸渍/炭化(I/C)坯体的C/C-Cu材料摩擦系数及自身和对偶件的磨损量均高于采用化学气相渗透(CVI)坯体的试样;摩擦面平行于纤维取向的试样摩擦系数低于垂直于纤维取向的试样,但磨损率较高。
C/C-Cu composites were fabricated by molten Cu alloy infiltration into C/C preforms prepared by chemical vapor infiltration or impregnation/carbonization. The tribological behavior of the composite block with the Cu ring counterpart was evaluated using an MM-2000 friction and wear tester. The worn surface morphologies of the composite blocks and the Cu rings were analyzed by means of scanning electron microscopy. The influence of the C/C preform on the tribological behavior of the composites was investigated. The results show that the friction coefficient, wear rate of the composites and the mass loss of Cu rings decrease with the increasing of density of the preforms; the friction coefficient and wear rate of the composite with impregnation/carbonization preform is higher than those with chemical vapor infiltration preform; the wear rate of the composites with parallel orientation is higher than that with vertical orientation, while the formers＇ friction coefficient is lower.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2008年第2期10-15,共6页
Acta Materiae Compositae Sinica
基金
国家重点基础研究发展(973)计划项目(2006CB600906)
