Reduction of Tantalum Pentoxide Using Graphite and Tin-Oxide-Based Anodes via the FFC-Cambridge Process
Reduction of Tantalum Pentoxide Using Graphite and Tin-Oxide-Based Anodes via the FFC-Cambridge Process
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DOI：
10.1007/s11663-008-9219-6
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发表时间：
2009-04-01
影响因子：
3
通讯作者：
Fray, Derek J.
中科院分区：
文献类型：
--
作者：
Barnett, Roger;Kilby, Kamal Tripuraneni;Fray, Derek J.
研究了五氧化二钽（Ta_2O_5）在熔融氯化钙中的电化学还原反应。氧化物被制成阴极，石墨或氧化锡棒被选择作为阳极。在使用双电极装置进行8小时的恒电位电解后终止实验，记录电流和阳极电位。通过X射线衍射、扫描电子显微镜（SEM）和惰性气体熔融分析对阴极产物进行了分析。关键的结果是，钽可以使用任何一种阳极生产，但氧化锡阳极导致更大的电流效率和更清洁的熔体，产品微观结构没有显着差异。
An investigation into the electrochemical reduction of tantalum pentoxide (Ta2O5) to tantalum metal in molten calcium chloride was performed. The oxide was made the cathode, and either graphite or tin oxide rods were selected as the anodes. The experiments were terminated after 8 hours of potentiostatic electrolysis using a two-electrode setup, with the current and anodic potential recorded. The cathode products were analyzed by means of X-ray diffraction, scanning electron microscopy (SEM), and inert-gas fusion analysis. The key result is that tantalum can be produced using either anode, but the tin oxide anode leads to greater current efficiency and a cleaner melt with no significant differences in the product microstructure.