导电陶瓷颗粒Ti_3SiC_2含量对碳纤维-铜-石墨复合材料性能的影响

采用超声波化学镀覆技术和电镀技术分别对导电陶瓷Ti_3SiC_2颗粒表面和碳纤维表面进行镀铜处理。用粉末冶金法制备了两组成分相同的Ti_3SiC_2-碳纤维-铜-石墨复合材料,其中一组加入的是镀铜Ti_3SiC_2(A组),另一组加入的是不镀铜Ti_3SiC_2(B组),对它们的密度、电阻率、硬度和抗弯强度进行了测试。结果表明:随Ti_3SiC_2含量的增加两组复合材料的密度、导电性、硬度和抗弯强度明显提高,并且加镀铜Ti_3SiC_2的碳纤维-铜-石墨复合材料的性能指标明显优于加不镀铜Ti_3SiC_2的碳纤维-铜-石墨复合材料。

Effect of Conductive Ceramic Particles Ti_3SiC_2 Content on the Properties of Carbon Fiber-Copper-Graphite Composites

The surfaces of conductive ceramic Ti_3SiC_2 particles and carbon fibers were coated respectively with continuous copper through ultrasonic electroless copper plating and continuous electroplating copper method.Two groups the Ti_3SiC_2 / carbon fiber-copper-graphite composites of the same composition were made by means of powder metallurgy with one added by copper-coated Ti_3SiC_2（Group A） and the other by non-copper-coated Ti_3SiC_2（Group B）,and their density,resistivity,hardness,bending strength were tested.The results show that in the two groups of composites,their density,conductivity,hardness and bending strength increase greatly with the increase of Ti_3SiC_2,and properties of copper-coated Ti_3SiC_2 / carbon fiber-copper-graphite composites are remarkably superior to the Ti_3SiC_2 / carbon fiber-copper-graphite composites.