Impurities especially titanium in the rare earth metal gadolinium— before and after solid state electrotransport

作     者：苗睿瑛 张小伟 朱琼 张志琦 王志强 颜世宏 陈德宏 周林 李宗安 MIAO Ruiying;ZHANG Xiaowei;ZHU Qiong;ZHANG Zhiqi;WANG Zhiqiang;YAN Shihong;CHEN Dehong;ZHOU Lin;LI Zong’an

作者机构：National Engineering Research Center for Rare Earth Materials General Research Institute for Nonferrous Metals Grirem Advanced Materials Co. Ltd. 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2014年第32卷第11期

页      面：1073-1079页

核心收录：

学科分类：080603[工学-有色金属冶金] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：Project supported by Major State Basic Research Development Program of China(973 Program:2012CBA01207) the National High Technology Research and Development Program of China(863 Program:2011AA03A409) 

主　　题：impurities titanium rare earth metal gadolinium solid state electrotransport 

摘      要：Gadolinium was prepared by conventional procedures of fluorination, reduction, distillation and solid state electrotransport（SSE）. The electronegativities of the metals were found to have an important influence on the electrotransport process and result of the impurity element. Meanwhile, titanium particles in the distilled gadolinium as major metallic impurities were studied by high resolution transmission electron microscopy（HRTEM） before and after solid state electrotransport. The results showed that impurities especially titanium transported from anode to cathode during SSE. In the metal before SSE, there were impurities of titanium in strip shape or embedded round shape. After SSE processing, titanium particles in the metal smaller than 50 nm in the cathode, but existed 6 to 10 times bigger in the anode.