Research Progress in Preparation and Purification of Rare Earth Metals
作者： Hang Liu , Yao Zhang , Yikun Luan , Huimin Yu , Dianzhong Li
DOI: 10.3390/MET10101376
关键词:
摘要: The purity of rare earth metals is one the most important factors to research and develop high technique materials. However, are not easily achieved. This review summarizes preparation purification methods metals. First, principle process molten salt electrolysis metal thermal reduction introduced. main sources metallic impurities interstitial in as well action mechanism reducing concentration different analyzed summarized. Then, vacuum distillation, arc melting, zone solid state electromigration also discussed. Furthermore, removal effect function rule outlined. Finally, crucial issues development put forward, direction future pointed out on this basis.
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