ELECTROCHEMICAL ALLOYING OF Ni IN MOLTEN NaCl-KCl-PrCl_3
Ni在NaCl—KCl—PrCl3熔体中的电化学合金化

The cyclic vltammetry, electrode potential--time curve after potentiostatic elec- trolysis, potential step method and X--ray diffraction were used to study the electrode process of Pr(III) reduced on Ni electrode in molten NaCl--KCl--PrCl_3 and to determine the diffusion coefficient of Pr into its alloy phase. The Pr-Ni alloys are formed before the deposition of me- tallic Pr. The PrNi_5 is formed on electrode first and then the intermetallic compounds contained more Pr are formed in sequence. The standard free energy of formation for PrNi_5 has also been determined.