Ta_2O_5直接制备金属钽的研究  

Tantalum Production Directly from Ta_2O_5

作　　者：陈朝轶[1] 鲁雄刚[1] 李谦[1] 程红伟[1] 刘建民[1] 周国治[1] 

机构地区：[1]上海大学材料科学与工程学院

出　　处：《稀有金属》2007年第3期306-310,共5页Chinese Journal of Rare Metals

基　　金：国家863专项课题(2006AA06Z124);博士学科点专项科研基金项目(20050280014);上海市优秀学科带头人计划项目(06XD14032)

摘　　要：利用固体透氧膜(SOM)法对Ta2O5直接电解制备金属钽进行了研究。Ta2O5粉经压片烧结后制成阴极,氧化钇稳定氧化锆管内的碳饱和铜液为阳极,混合熔盐MgF2-CaF2为电解质,在1150℃不同电压下进行电解。经XRD,SEM等分析表明:在透氧膜稳定的条件下,电压越高,脱氧速度越快。该方法制备金属钽具有电解速度快、电流密度高等优点,发展前景良好。The production of tantalum from Ta205 directly by using the solid oxygen-ion membrane （SOM） was investigated. In molten flux MgF2-CaF2 system, the Ta2O5 powder was pressed into pellet after sintering acted as cathode, and liquid copper saturated with carbon loaded in yttria-stabilized-zirconia （YSZ） tube acted as the anode, the cathode pellets were deoxidized at different electrolytic potentials at 1150 ℃. Through XRD and SEM results showed the deoxidize speed became fast when the electrical potential raised under the conditions of membrane being stable. The process has many advantages such as the fast electrolysis speed and the high current densities etc, so it has a wide future.

关 键 词：SOM法 五氧化二钽 金属钽 

分 类 号：TG146.4[一般工业技术—材料科学与工程]