(1. 重慶大學(xué) 材料科學(xué)與工程學(xué)院，重慶 400044；
2. 貴州大學(xué) 材料與冶金學(xué)院，貴陽(yáng) 550003；
3. 貴州師范大學(xué) 材料與建筑工程學(xué)院，貴陽(yáng) 550025)
摘 要: 采用含TiO2炭陽(yáng)極直接熔鹽電解制備低鈦鋁合金。對(duì)含TiO2炭陽(yáng)極在CO2/空氣中的殘余率分別進(jìn)行測(cè)試，用XRD對(duì)含鈦瀝青焦進(jìn)行分析，運(yùn)用SEM和EDS手段對(duì)炭陽(yáng)極、原鋁和電解鋁的形貌和組成進(jìn)行表征。結(jié)果表明：TiO2的添加可顯著改善炭陽(yáng)極在CO2和空氣中的殘余率，當(dāng)TiO2添加量(質(zhì)量分?jǐn)?shù))為1%時(shí)，炭陽(yáng)極在CO2中的殘余率由76.3%急劇增加到93.5%，在空氣中的殘余率從51.87%增加到65.92%； TiO2在炭陽(yáng)極制備過(guò)程中其化學(xué)成分未發(fā)生變化，含TiO2炭陽(yáng)極在電解過(guò)程中運(yùn)行穩(wěn)定；隨著炭陽(yáng)極的消耗，TiO2溶入電解質(zhì)中，可實(shí)現(xiàn)低鈦鋁合金的制備。
關(guān)鍵字: 含鈦炭陽(yáng)極；殘余率；電解；低鈦鋁合金
（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
