摘要
以直接电解脱氧法(FFC法)电解氧化镝制取金属镝工艺为主要研究范畴。实验以烧结Dy2O3试样为阴极,高纯石墨棒为阳极,于CaCl2熔盐中电解脱氧。结合电脱氧理论系统研究了试样的成型压力、烧结温度以及烧结时间对所得阴极电解过程及产物脱氧率的影响。同时,结合对各条件下阴极片体的微观形貌的分析结果及电脱氧产物XRD谱图分析,得到了阴极制备工艺的适宜条件。实验结果表明:直接电脱氧法制备金属镝工艺是可行的,微孔阴极中的颗粒连通性好、颗粒尺寸小、孔隙率高均有利于电脱氧进行。实验得到的最佳电极制备条件为:成型压力为15 MPa、烧结温度为1200℃、烧结时间为8 h。
Electro-deoxidation of Dy metal from Dy2O3(FFC method) was studied in a eutectic melt of CaCl2 with sintered Dy2O3 pellets as an anode and high-density graphite rods as a cathode.Based on the direct electrochemical reduction theory,the effects of compact load,sintered temperature and sintered time on the reaction of electro-deoxidation and the oxygen contents in the prepared products were investigated.The micro-structure features of the Dy2O3 in different conditions were investigated,and the products of the...
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2010年第5期755-763,共9页
Chinese Journal of Rare Metals
基金
国家科技部"973"计划项目(2007CB613504)
教育部创新团队计划项目资助
关键词
镝
氧化镝
熔融盐
直接电脱氧
dysprosium
dysprosium oxide
molten salt
direct electrochemical reduction
