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Carbon nanotubes (CNTs) were coated by tungsten layer using metal organic chemical vapor deposition process with tungsten hexacarbonyl as a precursor.The W-coated CNTs (W-CNTs) were dispersed into Cu powders by magnetic stirring process and then the mixed powders were consolidated by spark plasma sintering to fabricate W-CNTs/Cu composites.The CNTs/Cu composites were fabricated using the similar processes.The friction coefficient and mass wear loss of W-CNTs/Cu and CNTs/Cu composites were studied.The results showed that the W-CNT content,interfacial bonding situation,and applied load could influence the friction coefficient and wear loss of W-CNTs/Cu composites.When the W-CNT content was 1.0 wt.％,the W-CNTs/Cu composites got the minimum friction coefficient and wear loss,which were decreased by 72.1％ and 47.6％,respectively,compared with pure Cu specimen.The friction coefficient and wear loss of W-CNTs/Cu composites were lower than those of CNTs/Cu composites,which was due to that the interfacial bonding at (W-CNTs)-Cu interface was better than that at CNTs-Cu interface.The friction coefficient of composites did not vary obviously with increasing applied load,while the wear loss of composites increased significantly with the increase of applied load.