在熔盐MgF2-CaF2中以预烧成型的Ta2O5为阴极,氧化钇稳定氧化锆管内的碳饱和铜液为阳极,利用固体透氧膜(SOM)法直接电解还原Ta2O5制备了金属钽.在3.5 V电压下,研究了不同温度下阴极产物的形貌及其对脱氧的影响,分析了电流随时间变化的规律.结果表明:随着电解温度的升高,脱氧速度加快,金属钽颗粒尺寸明显增大,其形貌由海绵状向块状转变;当温度为1423 K时,具有较好的金属钽制备效果.
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