Carbon nanotubes(CNTs)are considered as one of the ideal reinforcements for a new generation of high-strength,structurally and functionally integrated Cu matrix composites,due to their excellent mechanical properties as well as electrical and thermal conductivity.However,the poor dispersion ability and wettability of carbon nanotubes in the copper matrix pose significant challenges in preparation of CNT-reinforced copper-based(CNTs/Cu)composites,and these issues greatly affect the properties of the resulting materials.The main methods currently available for the preparation of carbon nanotubes reinforced copper-based composites were summarized,including the method of pretreatment of carbon nanotubes,the method of dispersion of carbon nanotubes in Cu powder,and the method of sintering of the composites.Besides this,the research progress on the mechanical properties,friction and wear performance,as well as electrical and thermal conductivity of the composites were presented.Some positive thinking and suggestions were made based on the current research status,which can provide reference for the preparation of CNTs/Cu composites.
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