SOM法金属氧化物制取金属新技术  

A new technique study of metal preparation by SOM method

作　　者：陈朝轶[1] 鲁雄刚[1] 李谦[1] 刘建民[1] 程红伟[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：《材料与冶金学报》2007年第3期204-208,共5页Journal of Materials and Metallurgy

基　　金：高等学校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：以MgF2-CaF2为熔盐电解质，利用固体透氧膜（SOM）法直接电解还原Ta2O5和TiO2制备了金属钽和钛，分析了制样压力和电解温度对阴极产物形貌的影响以及电流的变化规律．结果表明：SOM法直接制备金属钽和钛的电解速度快，电流密度高，合理的制样压力为250～332MPa，电解电压为3．2～3．8V，电解温度在1373～1432K之间。该方法较FFC有诸多优点，用于对我国各类稀有难熔金属矿资源进行开发利用，具有好的发展前景．In molten flux MgF2 -CaF2 system, a method preparing Ta from Ta2O5 and Ti from TiO2 directly by using Solid Oxygen - ion Membrane （SOM） was proposed, and analyzed the effect of the pressure and electrolysis temperature to cathode images and the changing law of current. The results showed that the SOM process can produced directly Ta and Ti, it can get the great electrolysis speed and the high current density, the reasonable pressure, electrolysis voltage, electrolysis temperature were 250 - 332 MPa, 3.2 - 3.8 V, 1 373 - 1 423 K, respectively. There were many excellences comparing the SOM process to the FFC process, it can exploit and utilize for all kinds of the rare refractory metals , so it has a pleasant future.

关 键 词：SOM法 五氧化二钽 二氧化钛 熔盐电解 

分 类 号：TG146.4[一般工业技术—材料科学与工程]