The microstructures of in-situ synthesized TiC by Ti-CNTs reaction in Cu melts

Abstract In order to study the influence of carbon nanotubes (CNTs) as a source on microstructure in-situ synthesized TiC in Cu melts, CNTs and Ti powders were introduced into melted prepare TiC-reinforced matrix composites. The Ti/C ratio Si microstructures properties composites also examined. It is found that can be effectively wetted through Ti-C reaction successfully melt synthesize TiC. examining changes ratio, it was an increase content may result decrease agglomeration improvement dispersion, while simultaneously causing particle size. Besides, addition Ti-CNTs mixture improve distribution TiC, effect weak compared with increasing Ti. highest hardness (238.8 HV) achieved by Cu-Ti-C composite electrical conductivities all prepared are relatively low, which should due insufficient between CNTs.