Study of Solid Particle Erosion Wear Resistance of WC–Co Cemented Carbide

In this paper, several major factors affecting the erosion wear of WC–Co cemented carbide were tested and analyzed by the cemented carbide solid particle erosion test. In addition to the erosion angle, the impact velocity, the hardness and dimensions of the abrasive and the degree of fracture of the abrasive after impacting the target material also have a significant effect on the erosion wear results. Abrasives with a high degree of fragmentation after erosion have lower erosion wear efficiency for cemented carbides. The increase in Co content and WC grain size will lead to the decline of erosion resistance of cemented carbide. After the energy spectrum analysis of the target material after erosion, it was found that Co particles were first detached during the erosion process. Later, due to the instability of the entire microstructure, a series of erosion wears was caused.