熔盐电解法制备海绵钛工艺中TiO_2电极制备关键技术分析  

Preparation Key Technical Analysis of TiO_2 Electrode in the Production of Titanium by Electrolysis in Molten Salt

作　　者：李珍[1,2] 孙建科[2] 常鹏北[2] 罗志涛[2] 邢朋飞[2] 彭晖[2] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [2]中国船舶重工集团公司第七二五研究所,河南洛阳471039

出　　处：《材料开发与应用》2010年第1期1-5,共5页Development and Application of Materials

摘　　要：熔盐电解法制备海绵钛所用电极,既是电的传导体,又是产品的来源。在电极的制备过程中,既要保证电流的顺畅导通,又要满足熔盐渗入电极中的工艺要求,如何解决这两者之间的矛盾,是关系着该工艺能否有效实施的关键。本文对上述问题进行了探索,通过理论分析及进行各种温度下电极的电阻系数、孔隙率的实验测定,找出制备电极的较好工艺。并应用该优化工艺后的电极进行了电解实验,产品含钛量达到99.5%以上,结合试验结果对电源设备进行了改进,电解电流已达到了40安培以上,在工艺上实现了较大的突破。TiO2 electrode is both a conductor and sources in the production of sponge titanium by molten salt electrolysis. In preparation of the electrode, to ensure electric current and meet the technology requirement of molten salt infiltration is a key pinot of contradiction, which will impact the technique process. In connection with above mentioned problems, theoretical analysis, detection of resistivity and porosity in different temperature were conducted and an optimized technical process was pre- posed. A number of electrolysis experiments showed that the sponge titanium made from the electrode which was prepared by the optimized process contains more than 99.5% titanium. The current supply was also modifed according to the electrolysis experiments and the electric current could reach as high as 40A, which makes a large breakthrough in process.

关 键 词：二氧化钛 孔隙率 导电性 电解 钛 

分 类 号：TG146.23[一般工业技术—材料科学与工程]