Abstract: The multilayered carbon nanotubes (CNTs)/Ti/A1...composite was prepared on an Al-alloy surface by vacuum evaporation,and then treated by laser alloying.The micmstractures of the surface layerwere analysed using XRD and SEM.It is found that TiC particles and the CNTs with an intrinsic tubiform structure are homogeneously distributed inthe surfacing layer.The fine in-situ synthesis TiC particles adhere to theCNTs,improving the interfical strength of CNTs-matrix.Alloying be formed in the muhilayered composite,interface is metallurgical bondingbetween aluminium alloy substrate and composite coating.