In this paper, the phase diagram of the DyCl_3-NaCl system is optimized and calculated with CALPHAD (calculation of phase diagram) technology. A set of thermodynamic functions of compounds Na_3DyCl_6, NaDyCl_4, and Na...In this paper, the phase diagram of the DyCl_3-NaCl system is optimized and calculated with CALPHAD (calculation of phase diagram) technology. A set of thermodynamic functions of compounds Na_3DyCl_6, NaDyCl_4, and NaDy_2Cl_7 have been optimized and calculated based on an interactive computer-assisted analysis. The optimized thermodynamic parameters, calculated phase diagram and experimental phase diagram are thermodynamically self-consistent.展开更多
The cyclic voltammetry,electrode potential-time curve after potentiostatic electrolysis,potential-step method and X-ray diffraction were used to study the electrochemical reaction of Dy￣(3+) in equimolar NaCl-KCl mix...The cyclic voltammetry,electrode potential-time curve after potentiostatic electrolysis,potential-step method and X-ray diffraction were used to study the electrochemical reaction of Dy￣(3+) in equimolar NaCl-KCl mixture on Ni electrode.The DyNi5 forms at first and then the intermetallic compounds of Dy-Ni containing more Dy form in sequence.The metallic Dy deposits at last.The Dy-Ni alloy was prepared by consumable cathode in molten chlorides.The Dy-Ni alloy contained Dy over 85 wt% was obtained.The composition of alloy was DyNi5 and Dy.The current efficiency and the recovery of Dy were near 80%.展开更多
文摘In this paper, the phase diagram of the DyCl_3-NaCl system is optimized and calculated with CALPHAD (calculation of phase diagram) technology. A set of thermodynamic functions of compounds Na_3DyCl_6, NaDyCl_4, and NaDy_2Cl_7 have been optimized and calculated based on an interactive computer-assisted analysis. The optimized thermodynamic parameters, calculated phase diagram and experimental phase diagram are thermodynamically self-consistent.
文摘The cyclic voltammetry,electrode potential-time curve after potentiostatic electrolysis,potential-step method and X-ray diffraction were used to study the electrochemical reaction of Dy￣(3+) in equimolar NaCl-KCl mixture on Ni electrode.The DyNi5 forms at first and then the intermetallic compounds of Dy-Ni containing more Dy form in sequence.The metallic Dy deposits at last.The Dy-Ni alloy was prepared by consumable cathode in molten chlorides.The Dy-Ni alloy contained Dy over 85 wt% was obtained.The composition of alloy was DyNi5 and Dy.The current efficiency and the recovery of Dy were near 80%.
