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采用液相还原法,以七钼酸铵((NH4)6Mo7O24.4H2O)、氯化铜和水合肼为原材料,制备了前驱体粉末,通过煅烧、还原,得到含Cu30%的Mo-Cu复合粉。对该复合粉进行表征,并对其压坯在H2气氛中于不同温度下进行烧结,对烧结体的微观结构和物理、力学性能等进行测试分析。结果表明:液相还原制备的Mo-Cu复合粉末颗粒细小,尺寸分布在50～100 nm;经烧结后合金相对密度达到97%以上,组织分布均匀。
The precursor powder was prepared by liquid reduction method using ammonium heptamolybdate ((NH4) 6Mo7O24.4H2O), cupric chloride and hydrazine hydrate as raw materials, calcined and reduced to obtain Cu-30% Mo-Cu composite powder . The composite powder was characterized, and its compact was sintered at different temperatures in H2 atmosphere. The microstructure, physical and mechanical properties of the sintered compact were tested and analyzed. The results show that the particle size of Mo-Cu composite powders prepared by liquid reduction is small and the size distribution is 50 ~ 100 nm. After sintering, the relative density of the alloy reaches more than 97% and the microstructure is uniform.