http://www.seipub.org/fwr/paperInfo.aspx?ID=3985
A self-lubricant Ni-based composite coating was fabricated on the H13 steel substrate by laser cladding a mixture of Ni-coated MoS2 particles and NiCrBSi particles using a CO2 laser. The microstructure, microhardness and wear properties of the clad coating were investigated. The results showed that the laser clad coating was composed of sphere-like CrxSy particle, net-like eutectic of the compound of sulfide of iron, and chromium, and dendritic γ-Ni solid solution. A metallurgical bonding between the laser clad coating and substrate was obtained. The micro-hardness of the coating is 350~420 HV0.2. The friction coefficient of the coating is 0.10~0.20 at room-temperature in air. The wear mass loss of the coating is reduced to 17.4% of that of the substrate in wear testing.