采用电冶重熔法 ,并引入稀土改性制备RE WC 钢基复合材料 ,研究了复合材料的显微缺陷、硬质相的存在状态、合金性能。实验结果显示 :RE WC 钢基复合材料中未观察到脏孔和游离石墨 ,与未加稀土的WC 钢基合金相比孔隙率明显下降 ,WC颗粒的孤立度提高 ,耐磨性得到改善 Remelted by electrofusion method, and the introduction of rare earth modified RE WC steel-based composite materials, the microstructure defects of composites, the presence of hard phase, alloy properties. The experimental results show that: no porosity and free graphite are observed in the RE WC steel matrix composites, the porosity is obviously decreased compared with the WC steel without the addition of RE, the isolation of the WC particles is improved and the wear resistance is improved