DEVELOPMENT OF STEEL USED WEAR RESISTANCE COATING MATERIAL USING SPRAY COATING METHOD

A ternary-base wear resistance material was developed on steel 45 by spray coating with the surface hardness of 84 HRA. The raw powders were dissolved in rubber ethanol solution. The sintering temperature identified by thermal analysis was 1 280 ℃. The microstructure has been studied using SEM, EDS and XRD. Results show that the coating layer is composed of ternary boride base hard phase and ferrous base binder phase, the hard phase and binder phase are distributed uniformly in the layer. The interface between the coating layer and steel 45 bonds well, due to the chemical reaction and elements diffusion in the interfacial zone. The outstanding wear resistance was confirmed by wear tests.