Acta Metall Sin  1996, Vol. 32 Issue (12): 1252-1257    DOI:

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STUDIES ON THE PREPARATION OF Dy-Cu ALLOY IN CHLORIDE MELT BY MOLTEN SALT ELECTROLYSIS

LIU Guankun; TONG Yexiang;HONG Huichan; CHEN Shengyang;GAN Luo(Zhongshan University; Guangzhou 510275)(Manuscript received 1995-10-23; in revised form 1996-08-25)

LIU Guankun; TONG Yexiang;HONG Huichan; CHEN Shengyang;GAN Luo(Zhongshan University; Guangzhou 510275)(Manuscript received 1995-10-23; in revised form 1996-08-25). STUDIES ON THE PREPARATION OF Dy-Cu ALLOY IN CHLORIDE MELT BY MOLTEN SALT ELECTROLYSIS. Acta Metall Sin, 1996, 32(12): 1252-1257.

Abstract References Related Articles Recommended Metrics Download:  PDF(396KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The cyclic voltemmetry, electrode potential-time curve after potentiostatic electrolysis, potential-step and X-ray diffraction methods were used to study the electrochemical reaction of Dy (Ⅲ) on Cu electrode in NaCl-KCl equimolar mixture. The Dy-Cu alloys formed first and then several intermetallic compounds of Dy-Cu containing more Dy formed in sequence. The metallic Dy depositsed at last. The standard free energies of formation for DyCu5, DyCu2 and DyCu are determined to be -107. 1,-101.9 and -75.6 kJ .mol(-1), at 1073 K, respeetively. The relationship between diffusion coefficient and temperature of Dy atom in DyCu5-DuCu2 alloy phase can be expressed as lnD = -67.1×103 / RT-15.8 and the diffusion activation energy is 67.1 kJ . mol-1. The production consisting of Dy-Cu alloy and Dy contains elemet Dy over 92%. The composition of alloy was DyCu and Dy.The current efficiency was near 80% . Key words:  Dy-Cu alloy      molten salt      electrolysis      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1996/V32/I12/1252 1FlengasSN,IngrahamTR．JElectrochemSoc,1959;106:7142HamerWJ,MalmbergMS,RubinB．JElectrochemSoc,1956;103:83KabanovBN,AstakhovII,KiselevaIG．ElectrochemActa,1979;24:1674BardAJ,FaulkerLR．ElectrochemicalMethods．NewYork:JohnWiley&Sons,19805ClaytonFR,MamantovG,ManningDL．JElectroanalSoc,1973;120:11936MassalskiTB．BinaryAlloyPhasesDiagrams．NewYore:ScottWWJr,1990:15427杨绮琴,刘冠昆,蔡伟文,刘泽锦．稀有金属,1992;1:18 [1] Jing GUO,Hanjie GUO,Keming FANG,Shengchao DUAN,Xiao SHI,Wensheng YANG. Morphology Prediction Theory and Experimental Measurement for the Secondary Phase Particle in Steel[J]. 金属学报, 2017, 53(7): 789-796. [2] Tao LIU,Jiasheng DONG,Guang XIE,Yisheng WANG,Hui LI,Zhijun LI,Xingtai ZHOU,Langhong LOU. CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT[J]. 金属学报, 2015, 51(9): 1059-1066. [3] YAN Yongde, YANG Xiaonan, ZHANG Milin, WANG Li, XUE Yun, ZHANG Zhijian. STUDY ON PREPARATION OF Al-Li-Gd ALLOYS BY ELECTROCHEMICAL CODEPOSITION FROM CHLORIDE MELTS[J]. 金属学报, 2014, 50(8): 989-994. [4] GONG Wenbiao, LI Renwei, LI Yupeng,SUN Daqian, WANG Wenquan. STABILIZATION AND CORROSION RESISTANCE UNDER HIGH-TEMPERATURE OF NANOSTRUCTURED CeO2/ZrO2-Y2O3 THERMAL BARRIER COATING[J]. 金属学报, 2013, 49(5): 593-598. [5] WANG Shulan CHEN Xiaoyun. STUDY ON THE ELECTRO–REFINING SILICON IN MOLTEN SALT CaCl2–NaCl–CaO[J]. 金属学报, 2012, 48(2): 183-186. [6] PENG Haijian JIN Jun LI Defu HU Jie. CORROSION BEHAVIORS OF Ni-Cr-Mo CORROSION RESISTENCE ALLOYS IN CaCl2-CaF2 MOLTEN SALT[J]. 金属学报, 2011, 47(9): 1195-1199. [7] LV Jiaxin; ZHENG Lei; ZHANG Maicang; DONG Jianxin. CORROSION BEHAVIOR OF NICKEL BASE ALLOY FGH95 IN MOLTEN NaCl–Na2SO4[J]. 金属学报, 2009, 45(2): 204-210. [8] ZHAO Bingjian LU Xionggang LI Chonghe ZHONG Qingdong. DIRECT ELECTROCHEMICAL REDUCTION OF NiO–CeO2 POWDER FOR PREPARATION OF CeNi5 ALLOY BY SOLID–OXYGEN–ION CONDUCTING MEMBRANE PROCESS[J]. 金属学报, 2009, 45(10): 1255-1260. [9] ;. Investigation on Preparation of Tb2Fe17 by Direct Electrochemical Reduction of Tb4O7-Fe2O3 Pellet in Molten Calcium Chloride[J]. 金属学报, 2008, 44(7): 859-862 . [10] ;. EXPERIMENTAL RESEARCH OF PREPARATION OF CaB6 BY MOLTEN SALT ELECTROLYSIS METHOD[J]. 金属学报, 2008, 44(10): 1243-1246 . [11] ;. A NOVEL TECHNOLOGY TO PRODUCE METAL TANTALUM DIRECTLY FROM Ta2O5[J]. 金属学报, 2006, 42(5): 500-504 . [12] . PREPARATION OF TANTALUM BY ELECTRO-DEOXIDATION IN A CACL2-NACL MELT[J]. 金属学报, 2006, 42(3): 285-289 . [13] ZHANG Jian(Metallurgical Engineering School; University of Science and Technology Beijing; Beijing 100083). CONSISTENCY(OR SIMILARITY) OF THERMODYNAMIC PROPERTIES OF METALLURGICAL MELTS WITH THEIR PHASE DIAGRAMS[J]. 金属学报, 1998, 34(7): 742-752. [14] LIU Gang;CHEN Ruiliang;LI Chonghe;CHEN Nianyi(Shanghai Institute of MetaIlurgy; Chinese Academy of Sciences; Shanghai 200050). REGULARITIES OF MUTUAL SOLUBILITY OF MOLTEN SALT-LIQUID METAL SYSTEMS[J]. 金属学报, 1997, 33(9): 939-942. [15] ZHANG Jian (University of Science and Technology Beijing; Beijing 100083). CALCULATING MODELS OF MASS ACTION CONCENTRATIONS FOR SEVERAL MOLTEN BINARY SALTS[J]. 金属学报, 1997, 33(5): 515-523. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed