Laser cladding coatings of TA2 titanium alloy with preplaced Tribaloy700(T700) powder to fabricate Ni-based tribaloy 700 coatings are experimentally studied for developing a hardfacing process of titanium alloy. Ni-based alloy coatings without cracks and pores on the boundary are obtained. The dilution of Ti will expedite the separation and growth of laves phases. Microstructure of the coating consists of mainly γ-Ni phase in cell and dendrite structure with less dilution of Ti and matrix (TiNi + γ-Ni) +laves phases in large dimension with more dilution of Ti. The transition region between the coating and substrate is about 80～100 μm thick. Microhardness test results show that, with solution strengthening and grain refinement, the microhardness of T700 coatings is higher than that of routine methods. The dilution of Ti will increase the microhardness dramatically. The microhardness of the coatings ranges from 700HV to 1000HV according to dilution ratio of Ti, and the microhardness are four to five times higher than that of TA2 alloy.