二硼化钛-铜-石墨复合材料的制备与性能研究

Preparation and Properties of TiB_2-Cu-C Composites

用粉末冶金法制备了一定含量的镀铜和不镀铜TiB2-Cu-C复合材料,以及Cu-C复合材料,对它们的物理和力学性能进行了测试,并在滑动速度为10 m/s,载荷为4.9 N的干摩擦条件下进行了36 h磨损试验,结果表明:镀铜TiB2-Cu-C复合材料的导电性、硬度、抗弯强度和耐磨性均优于不镀铜TiB2-Cu-C复合材料和Cu-C复合材料。

Copper-coated TiB2-Cu-C composite,TiB2-Cu-C composite with the same TiB2 content and Cu-C composite were prepared by the powder metallurgy method.Physical and mechanical properties of these kinds of composites were tested.The dry friction tests of the composites under sliding velocity of 10 m/s and load of 4.9 N were conducted for 36 h.The results show that such properties of the copper-coated TiB2-Cu-C composite as electric conductivity,hardness,bending strength and wear resistance are increased much more remarkably than those ofthe TiB2-Cu-C and Cu-C composites.