用铸造表面合金化工艺在灰铸铁表面制备了碳化钨－高铬铸铁复合材料，用ＭＭ－２００型试验机研究了该复合材料的耐磨粒磨损性能，并与球墨铸铁、淬火态４５＃钢及Ｆｅ２Ｂ相硼化物层的进行了对比．结果表明：当合金粉剂中含碳化钨颗粒质量分数为２０％时，碳化钨－高铬铸铁复合材料的耐磨性最佳；磨粒硬度和尺寸增大时，复合材料的耐磨性提高较大 The tungsten carbide - high chromium cast iron composite was prepared on the surface of gray cast iron by the casting surface alloying process. The wear resistance of the composite was studied by MM-200 testing machine. The wear resistance of the composites was compared with that of ductile iron, quenched 45 # steel And Fe2B phase boride layer are compared. The results show that the wear resistance of tungsten carbide - high chromium cast iron composite is the best when the content of tungsten carbide particles in the alloy powder is 20%. The wear resistance of the composites increases when the hardness and size of the particles increase Big