In this paper, high quality Mo-(10–40) wt% Cu and W-(10–40) wt% Cu alloys were prepared by powder metallurgy using the ultrafine molybdenum and tungsten powders as raw materials. The molybdenum powder with the size of 100–200 nm and tungsten powder with the size of 50–100 nm were prepared by a two-step reduction-process composed of an insufficient carbothermal reduction reaction and the following deep reduction reaction by hydrogen. From the experimental results, it was concluded that at the sintering temperature of 1200 °C to 1300 °C, relative densities of the Mo-(10–40) wt% Cu and W-(10–40) wt% Cu sintered blocks can reach >98%, and at the same time, excellent physical and mechanical properties were achieved. Meanwhile, the larger the content of copper in the alloy, the lower the temperature required for densification. At 1300 °C, the relative density, microhardness and thermal conductivity of the Mo-10 wt% Cu and W-10 wt% Cu sintered blocks are 98.83% and 99.36%, 167 HV and 283 HV, 138.38 W·m⁻¹·k⁻¹ and 154.15 W·m⁻¹·k⁻¹, respectively. Whereas, at 1200 °C, the relative density, microhardness and thermal conductivity of the Mo-40 wt% Cu and W-40 wt% Cu sintered block are 99.68% and 98.87%, 150 HV and 207 HV, 138.38 W·m⁻¹·k⁻¹ and 154.15 W·m⁻¹·k⁻¹, respectively. The present method was much more convenient relative to the traditional infiltration method.

在本文中，以超细钼粉和钨粉为原料，通过粉末冶金制备了高质量的Mo-（10-40）wt％Cu和W-（10-40）wt％Cu合金。通过两步还原工艺制备了100-200 nm的钼粉和50-100 nm的钨粉，该工艺由碳热还原反应不足和随后的氢深度还原反应组成。从实验结果可以得出结论，在1200°C至1300°C的烧结温度下，Mo-（10-40）wt％Cu和W-（10-40wt％Cu）烧结块的相对密度可以达到> 98％，同时获得了出色的物理和机械性能。同时，合金中铜的含量越大，致密化所需的温度越低。在1300°C下，^-1 ·k ^-1和154.15 W·m ^-1 ·k ^-1。而，在1200℃，将Mo-40％（重量）的Cu和W-40的相对密度，硬度和热导率重量％Cu的烧结块99.68％和98.87％，150 HV和207 HV，138.38·W·米^{- 1} ·k ^-1和154.15 W·m ^-1 ·k ^-1。相对于传统的渗透方法，本方法要方便得多。