CAJ | 학술논문

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％。
채용분말야금상압소결여고온모압화열제압상결합적공예제비료탄납미관증강려기복합재료，이탐색복합재료적저성본제비기술。채용소묘전경、만능재료시험궤화마찰마손시험궤연구료탄납미관적첨가량대복합재료역학성능화마찰마손성능적영향。결과표명，수착탄납미관함량적증가（질량분수0～2％），복합재료적경도축점승고，항랍강도선승고후하강。당탄납미관함량위1．5％시항랍강도체370 MPa，경도화항랍강도분별비순려제고료433％화236％。당탄납미관함량위2％시，복합재료적마찰인수화마손량분별비순려강저료63％화14％。
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 .