Ti_2O_3与AlCl_3共沉积方法熔盐电解制备Ti-Al合金  

Electrochemical Formation of Titanium-aluminum Alloys from Ti_2O_3 In-situ Chloridized by AlCl_3 in Chloride Melts

作　　者：闫蓓蕾[1] 

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2017年第4期34-39,共6页Iron Steel Vanadium Titanium

摘　　要：在NaCl-KCl熔盐体系中,以AlCl_3作为氯化剂,通过液相反应将钛的氧化物氯化为TiCl_3。对比TiO、Ti_2O_3、TiO_2的氯化效果,并综合AlCl_3与TiO、Ti_2O_3、TiO_2反应热力学分析,较好的结果是Ti_2O_3氯化为TiCl_3。采用不同的电化学测试手段研究了Al(Ⅲ)与Ti(Ⅲ)在Mo电极上的合金化过程,采用共沉积法制备TiAl_2、TiAl_3合金。同时借助于XRD和SEM手段对合金进行了分析,说明通过熔盐电解可以直接制备Ti-Al合金。This article investigated the feasibility of chlorination of titanium oxides to TiCl3 in liquid pnase using AlCl3 as chlorinating agent in the molten NaCl-KCl system. Compared with the chlorination results of TiO ,Ti203 and TiO2 and based on the thermodynamic analysis of reactions of AlCl3 with TiO ,Ti2O3 and TiO2, Ti2O3 was selected for chlorination to TiCl3. Different electrochemical testing means were used to in- vestigate the alloying process of Al （ Ⅲ ） and Ti （ Ⅲ ） on the molybdenum electrode and the feasibility of preparation of TiAl2 and TiAl2 alloys by codeposition. Alloys were analyzed using XRD and SEM. Thus, itis feasible to prepare Ti-Al alloys by molten salt electrolysis directly.

关 键 词：TI-AL合金 熔盐电解 低价钛熔盐 NaCl-KCl熔盐体系 电沉积 

分 类 号：TF823[冶金工程—有色金属冶金]