Performance Evaluation of Stirrers for Preventing Dendrite Growth on Liquid Cathode Kim, Si Hyung; You, Young Jae; Paek, Seung Woo; Shim, Joon Bo; Ahn, Do Hee [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)]; Yoon, Dal Seong [University of Science and Technology, Daejeon (Korea, Republic of)] 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 36 MATERIALS SCIENCE; CATHODES; DENDRITES; EVALUATION; GALLIUM; PERFORMANCE; ZINC; CRYSTALS; ELECTRODES; ELEMENTS; METALS CRYSTALS; ELECTRODES; ELEMENTS; METALS An electrolytic system (zinc anode-gallium cathode) was setup to evaluate the performance of several stirrers prepared for this study, where stirrers have been used to prevent uranium from forming dendrite on the cathode in pyrochemical process. In the case of no-stirring condition, zinc dendrites began to grow on the gallium surface in 1 hour and some dendrite grew out of the cathode crucible around 6 hours. When a rectangular stirrer or a tilt stirrer was rotated, at 40150 rpm, to mix the liquid gallium cathode, dendritic growth of zinc metal was prevented irrespective of revolution speed, but some of the deposits overflowed out of the cathode crucible owing to the large centrifugal forces at 150 rpm. The harrow stirrer did not nearly retard the dendrite growth at 40 rpm, but the dendrite growth was retarded at higher than 100 rpm and the zinc deposits also did not overflow at 150 rpm. Pounder could also prevent the dendrite growth to some extent but it had some difficulties in operation compared with other types of stirrers. Korea, Republic of 2009-06-15 Korean Journal Article Journal Name: Journal of the Korean Radioactive Waste Society; Journal Volume: 7; Journal Issue: 2 Medium: X; Size: page(s) 125-131 https://doi.org/ [] 2 7 Journal ID: ISSN 1738-1894; TRN: KR1102492074823 KRN 2012-12-22 21482223