研究了Y2O3添加对Cu-W合金显微组织和性能的影响。结果表明,混合粉末经过裂解、还原后颗粒尺寸得到显著细化。随着Y2O3添加量的增加,烧结试样中钨相尺寸逐渐减小。Y2O3的含量为0.4%时组织中的钨相分布最为均匀,烧结颈形成良好。但随着Y2O3含量的继续增加,钨颗粒自身及Y2O3的团聚倾向均增加,组织中出现孔洞。且Cu-W合金的硬度、电导率均逐渐减小。 The effect of Y2O3 addition on the microstructure and properties of Cu-W alloy was studied. The results show that after the mixed powder is cracked, the particle size is significantly refined after reduction. With the increase of Y2O3 addition, the size of tungsten phase in the sintered samples gradually decreases. When the content of Y2O3 is 0.4%, the distribution of tungsten in the microstructure is the most uniform and the formation of sintering neck is good. However, with the Y2O3 content continues to increase, the agglomeration tendency of tungsten particles themselves and Y2O3 are increased, holes appear in the organization. The hardness and electrical conductivity of Cu-W alloy decrease gradually.