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采用磁力搅拌与放电等离子烧结技术制备了碳纳米管(CNT)增强铝基复合材料.对试样进行了扫描电镜和透射电镜表征,测试了试样的力学性能、摩擦性能、电学性能和热学性能.当碳纳米管在试样中的质量分数为1%时,可在铝基体中均匀分布且CNT/Al界面结合良好,此时试样的抗拉强度和硬度较纯A1分别提高了29.4%和15.8%.在获得最佳力学性能强化和最佳减磨效果的同时.试样电导率较纯Al仅降低8.0%.碳纳米管可提高基体的热导率.但强化效果不明显.
The carbon nanotubes (CNTs) reinforced aluminum matrix composites were prepared by magnetic stirring and spark plasma sintering.The samples were characterized by scanning electron microscopy and transmission electron microscopy, and the mechanical, tribological, electrical and thermal properties of the samples were tested . When the mass fraction of carbon nanotubes in the sample is 1%, it can be uniformly distributed in the aluminum matrix and the CNT / Al interface is well bonded. At this time, the tensile strength and hardness of the sample are increased by 29.4% And 15.8%, respectively.While the best mechanical properties and the best anti-wear effect were obtained, the conductivity of the sample was reduced by only 8.0% compared with that of the pure Al.Carbon nanotubes could improve the thermal conductivity of the matrix, but the strengthening effect was not obvious.