Zirconium Metal Recovery from Zircaloy in Molten Fluorides  

作　　者：Laurent Massot Mathieu Gibilaro Delphine Quaranta Jerome Serp Pierre Chamelot Laurent Massot;Mathieu Gibilaro;Delphine Quaranta;Jerome Serp;Pierre Chamelot(Laboratoire de Gnie Chimique, Universit de Toulouse, Toulouse, France;Universit de Montpellier, Marcoule, France)

机构地区：[1]Laboratoire de Gnie Chimique, Universit de Toulouse, Toulouse, France [2]Universit de Montpellier, Marcoule, France

出　　处：《Materials Sciences and Applications》2024年第12期559-571,共13页材料科学与应用期刊(英文)

摘　　要：This article focuses on the electrorefining process in molten fluorides to selectively recover zirconium from one Zr-based metallic alloy involved in the field of nuclear energy: Zircaloy-4. Firstly, zirconium electrodeposition was investigated in molten LiF-NaF at 750˚C in order to determine appropriate operating conditions to ensure Zr metal recovery: concentration and applied current density. Then, anodic behaviour of Zircaloy-4 was studied and compared to its composing elements. These results allowed us to define an adapted electrorefining strategy. Electrorefining progress, anodic and cathodic faradic efficiencies were evaluated by materials characterization obtained after galvanostatic electrolyses.This article focuses on the electrorefining process in molten fluorides to selectively recover zirconium from one Zr-based metallic alloy involved in the field of nuclear energy: Zircaloy-4. Firstly, zirconium electrodeposition was investigated in molten LiF-NaF at 750˚C in order to determine appropriate operating conditions to ensure Zr metal recovery: concentration and applied current density. Then, anodic behaviour of Zircaloy-4 was studied and compared to its composing elements. These results allowed us to define an adapted electrorefining strategy. Electrorefining progress, anodic and cathodic faradic efficiencies were evaluated by materials characterization obtained after galvanostatic electrolyses.

关 键 词：Molten Fluorides ZIRCONIUM ZIRCALOY-4 ELECTROREFINING Dissolution Pathway 

分 类 号：TG1[金属学及工艺—金属学]