熔盐电镀制取铝电解用TiB_2惰性阴极  

Preparation of TiB_2 Inert Cathode by Electrodeposition Process for Aluminum Electrolysis

作　　者：徐君莉[1] 石忠宁[1] 邱竹贤[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2004年第9期873-875,共3页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究与发展规划项目(G1999064903)

摘　　要：采用熔盐电解法在碳阴极上电镀TiB2铝电解用惰性阴极材料,电解温度800℃,电解质组成(质量分数,%)为KCl4.8,KF55.7,K2TiF615.3,KBF424.2,电流密度为0 3A/cm2,电解3h·对制得的镀层做XRD和EMP电子探针形貌分析,实验结果表明,镀层成分为单一的TiB2,无杂相·镀层厚度可达0.2mm,表面平整,分布均匀,与碳基体结合良好,且有金属光泽·说明该电解条件下,Ti和B能够在阴极上共沉积并生成TiB2·The TiB_2 as inert cathode material for aluminum electrolysis, was electrodeposited successfully on carbon cathode as a coating by way of molten salts electrolysis at 800℃ for 3 hours with a current density 0.3A/cm^2, of which the composition of the electrolyte used is 4.8KCl-55.7KF-15.3K_2TiF_6-24.2KBF_4 in % as mass fraction. XRD was used to detect the composition of the coating with the Electron Probe Micro Analyzer (EPM) used for morphology observation. The results showed that the coating is composed of a single compound, i.e., TiB_2 without inclusions. The 0.2mm-thick TiB_2 coating is smooth and appears metallic luster, especially it is bonded firmly to the carbon substrate. It is confirmed that Ti and B can be co-deposited to form a TiB_2 coating on carbon surface as an inert cathode in this way.

关 键 词：铝电解 惰性阴极 熔盐电镀 TIB2涂层 

分 类 号：TF821[冶金工程—有色金属冶金]