摘要
通过化学气相渗透(CVI)、树脂浸渍/碳化(I/C)的工艺制成多孔的C/C预制件,采用气体压力浸渗方法向预制体中渗入铜,制备出C/C-Cu复合材料。以高密度C/C复合材料(1.9g/cm^3)作为对比样,在MM-200型磨损试验机上对其摩擦磨损性能进行测试,并对其微观结构和摩擦磨损机理进行分析。研究结果表明:C/C-Cu的摩擦系数比C/C复合材料的低,这主要与摩擦表面的摩擦膜有关,铜在摩擦力带动下填充摩擦表面的凹坑,并与碳材料共同形成摩擦膜,摩擦膜的碳含量越高,润滑效果越好。当C/C预制件密度为1.59g/cm^3时,C/C-Cu的摩擦系数和磨损量均小于C/C复合材料,摩擦磨损性能良好。
C/C-Cu composites were manufactured by gas pressure infiltration of copper into porous C/C preforms. The C/C preforms were prepared by chemical vapor infiltration （CVI） combined with resin impregnation and carbonization method （I/C）. Using the MM-200 wear machine, the C/C Cu composites were subjected to tribological test to investigate their friction behavior and wear mechanism. Compared with that of and C thus formed. With increasing C content in the friction film, the lubrication effect became better. When the density of C/C preforms was 1.59 g/cma, both the friction coefficient and bulk wear loss of C/C-Cu composites are lower than that of C/C composites, indicating the tribological properties were greatly improved.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2016年第5期815-819,共5页
Journal of Materials Science and Engineering
基金
西安航空学院校级科研基金资助项目(2015KY1105)
陕西省教育厅专项科研计划资助项目(15JK1373)
国家自然科学基金青年基金资助项目(21503154)
