Enhanced corrosion and wear resistance properties of carbon fiber reinforced Ni-based composite coating by laser cladding

To enhance the wear resistance and corrosion resistance of Ni-based coatings, carbon fibers reinforced nickel-based composite coatings (CFs/Ni) were fabricated on the surface of 1Cr13 stainless steel by laser cladding (LC). The microstructure characteristics, microhardness, wear and corrosion performances of the composite coatings were investigated. The results show that CFs can effectively improve the corrosion and wear resistances of Ni-based coatings. With increasing laser scanning speed, the morphology of CFs in composite coatings is more integral and the corrosion and wear resistances of the composite coatings are improved. Especially, when laser scanning speed is increased to 8mm/s, the average microhardness of the composite coating reaches up to 405HV0.2, which is about 1.3 times higher than that of Ni-based coating. Moreover, the corrosion current density and the wear rate of the composite coating are only 7% and 55% of those of the Ni-based coating, respectively, which is attributed to the good properties and homogeneous distribution of CFs and finer microstructure of composite coating. •Carbon fibers reinforced Ni-based composite coatings are fabricated by laser cladding.•Laser scanning speed can affect the morphology and distribution of carbon fibers.•Carbon fibers can enhance the corrosion resistance and wear resistance of CFs/Ni-based coatings.•Properties of CFs/Ni-based coatings are improved with increasing laser scanning speed.