固体透氧膜法制备金属Ta

PREPARATION OF METAL TANTALUM BY SOLID OXYGEN-ION MEMBRANE

利用固体透氧膜(SOM)法进行了从Ta2O5中提取金属Ta的实验．在1150℃,外加直流电解电压3．2 V下, 以55．5％MgF2-44．5％CaF2的熔盐体系为介质,阴极为经过预烧成型的Ta2O5,阳极为氧化锆管内的碳饱和铜液．测试结果显示:Ta2O5阴极中氧含量大大降低甚至消失,Ta2O5还原为金属Ta．

A method preparing Ta from Ta2O5 by using solid oxygen-ion membrane （SOM） was proposed. Experiment was carried out at 1150 ℃ and DC electrolysis potential of 3.2 V in the flux system of 55.5%MgF2-44.5%CaF2. Sintered Ta2O5 and carbon saturated liquid copper in zirconia tube were used as the cathode and the anode, respectively. The EDX measured results indicated that the content of oxygen in Ta2O5 decreased obviously even approached to the zero level and Ta2O5 was reduced to tantalum.