化学沉淀法制备Mo-Ru钎料粉末的组织结构及钎焊性能研究  

Microstructure and brazing performance of Mo-Ru alloyed powder prepared by hydrolysis-precipitation method

作　　者：陈南光 庄滇湘 刘泽光[3] 郑国伟 左杨 施宏宇 卢应孟 杨军 CHEN Nanguang;ZHUANG Dianxiang;LIU Zeguang;ZHEN Guowei;ZUO Yang;SHI Honyu;LU Yingmeng;YANG Jun(Sino-Platinum Metals Chemical(Yunnan)Co.Ltd.,Kunming 650106,China;Yunnan Precious Metal New Material Holding Group Co.Ltd.,Kunming 650106,China;Kunming Institute of Precious Metals,Kunming 650106,China)

机构地区：[1]贵研化学材料(云南)有限公司,昆明650106 [2]云南省贵金属新材料控股集团股份有限公司,昆明650106 [3]昆明贵金属研究所,昆明650106

出　　处：《贵金属》2024年第1期23-27,共5页Precious Metals

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SiO_(2),粉末粒度D_(80)≤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。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 SiO_(2).The size distribution parameter D_(80) 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.

关 键 词：金属材料 化学沉淀法 Mo-Ru钎料粉末 粉末粒度 显微组织 钎焊性能 

分 类 号：TG425.2[金属学及工艺—焊接]