(1. 重庆大学 材料科学与工程学院，重庆 400044；
2. 贵州大学 材料与冶金学院，贵阳 550003；
3. 贵州师范大学 材料与建筑工程学院，贵阳 550025)
摘 要: 采用含TiO2炭阳极直接熔盐电解制备低钛铝合金。对含TiO2炭阳极在CO2/空气中的残余率分别进行测试，用XRD对含钛沥青焦进行分析，运用SEM和EDS手段对炭阳极、原铝和电解铝的形貌和组成进行表征。结果表明：TiO2的添加可显著改善炭阳极在CO2和空气中的残余率，当TiO2添加量(质量分数)为1%时，炭阳极在CO2中的残余率由76.3%急剧增加到93.5%，在空气中的残余率从51.87%增加到65.92%； TiO2在炭阳极制备过程中其化学成分未发生变化，含TiO2炭阳极在电解过程中运行稳定；随着炭阳极的消耗，TiO2溶入电解质中，可实现低钛铝合金的制备。
关键字: 含钛炭阳极；残余率；电解；低钛铝合金
（1. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;
2. College of Materials and Metallurgy, Guizhou University, Guiyang 550003, China;
3. College of Material and Civil Engineering, Guizhou Normal University, Guiyang 550025, China）
Abstract:The low titanium aluminum alloy was prepared by molten salt electrolysis process using TiO2-containing carbon anode. The residual rates of TiO2-containing carbon anode in CO2 and in air atmosphere were tested, respectively, the TiO2-containing pitch cokes were tested by XRD, the morphology and composition of TiO2-containing carbon anode, initial aluminum and after electrolytic aluminum were analyzed by scanning electron microscope (SEM) and energy spectrum (EDS). The results show that the rate of residual of TiO2-containing carbon anode can also be significantly improved with increasing Ti content. When adding amount of TiO2 is 1%, the residual rate in CO2 sharply increases from 76.3% to 93.5%, and the residual rate in air increases from 51.87% to 65.92%. The TiO2 phase is unchanged during the process of preparing carbon anode. The TiO2-containing carbon anode can run stably in the electrolysis process. The TiO2 dissolves into electrolyte when the carbon anode is consumed, and the low titanium aluminum alloy is prepared.
Key words: TiO2-containing carbon anode; residual rate; electrolysis; low titanium aluminum alloy
