采用粉末冶金常压烧结与高温模压和热挤压相结合的工艺制备了碳纳米管增强铝基复合材料，以探索复合材料的低成本制备技术。采用扫描电镜、万能材料试验机和摩擦磨损试验机研究了碳纳米管的添加量对复合材料力学性能和摩擦磨损性能的影响。结果表明，随着碳纳米管含量的增加（质量分数0～2％），复合材料的硬度逐渐升高，抗拉强度先升高后下降。当碳纳米管含量为1．5％时抗拉强度达370 MPa，硬度和抗拉强度分别比纯铝提高了433％和236％。当碳纳米管含量为2％时，复合材料的摩擦因数和磨损量分别比纯铝降低了63％和14％。%An aluminum-base composite reinforced by carbon nanotube ( CNT) was prepared by powder metallurgy technique of normal pressure sintering in conjunction with hot mould pressing and hot extrusion to explore preparing the composite at a low price .The effect of the amount of CNT on mechanical properties , frictional and abrasive charachteristics of the composite was investigated by using SEM , universal material tester and friction and abrasion testers.The results show that with the increase of CNT content from 0 to 2%( by mass ) the hardness of the composite increases , while the tensile strength increases at the first , and afterwards decreases .When the CNT content is 1.5%, the tensile strength of the composite reach 370 MPa, the hardness and tensile strength of the composite are 433% and 236% higher than pure aluminum , respectively .When the CNT content is 2%, the friction coefficient and the wear amount of the composite are 63% and 14% lower than pure aluminum , respectively .
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