【摘要】 采用水合三氯化钌和钼酸铵在红外灯下化学共沉淀反应、通氢还原制备Mo-Ru粉末钎料。利用扫描电镜、能谱仪、X射线衍射及差热分析等技术，研究粉末的形貌、成分、熔化温度、钎料与钼片、多孔钨的钎焊性能。结果表明：用化学沉淀法制备粉末大部分是MoRu化合物颗粒、少量Mo、Ru单质粉末及微量SiO₂，粉末粒度D₈₀≤6μm，熔化后与钼片及阴极多孔钨基体浸润性良好，熔化温度为1959.7～1969.6℃，与相图上MoRu共晶钎料的熔化温度接近。更多还原

【Abstract】 Mo-Ru alloyed powder was prepared from ruthenium chloride hydrate and ammonium molybdate by using hydrolysis-precipitation method,and then the powder was characterized by scanning electron microscope （SEM） and X-ray diffraction （XRD）.The particle distribution,melting point and brazing performance were also measured.The results showed Mo-Ru powder was mainly made up of Mo-43Ru alloy but it also contained a small amount of unalloyed Mo and Ru as well as trace SiO₂.The size distribution parameter D₈₀ of Mo-Ru powder was determined to be≤6μm and good wetting was observed on Mo thin piece and W column.The melting temperature was 1959.7 to 1969.6℃，close to the value of the eutectic MoRu on the phase diagram.更多还原