In order to improve the hardness and tribological performance of Ti6Al4V alloy, NiCoCrAlY–B₄C composite coatings with B₄C of 5%, 10% and 15% (mass fraction) were fabricated on its surface by laser cladding (LC). The morphologies, chemical compositions and phases of obtained coatings were analyzed using scanning electronic microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD), respectively. The effects of B₄C mass fraction on the coefficient of friction (COF) and wear rate of NiCoCrAlY–B₄C coatings were investigated using a ball-on-disc wear tester. The results show that the NiCoCrAlY–B₄C coatings with different B₄C mass fractions are mainly composed of NiTi, NiTi₂, α-Ti, CoO, AlB₂, TiC, TiB and TiB₂ phases. The COFs and wear rates of NiCoCrAlY–B₄C coatings decrease with the increase of B₄C content, which are contributed to the improvement of coating hardness by the B₄C addition. The wear mechanisms of NiCoCrAlY–B₄C coatings are changed from adhesive wear and oxidation wear to fatigue wear with the increase of B₄C content.