I. V. Tolstobrov, O. V. El’kin, A. N. Bushuev, D. A. Kondrat’ev, V. A. Kozvonin
ABSTRACT
Electrochemical behaviors of Y(III) on copper electrode in molten NaCl–KCl + 5 wt % YCl3 was studied in this work. The potentials for the formation of copper-yttrium compounds were determined from CV method at 1023 K. The different Cu–Y alloys, such as Cu6Y, Cu4Y, Cu2Y, CuY were formed by potentiostatic electrolysis at different potentials and characterized by XFray diffraction (XRD) and scanning electron microscopy (SEM). Also two intermetallic compounds, Cu6Y and Cu4Y were synthesized by current-free diffusion saturation at 973 K and 1023 K. It was established that the samples obtained by current-free diffusion saturation have a thickness greater than those obtained by electrolysis. We can obtain copper-yttrium compounds of a given composition by potentiostatic electrolysis.
KEYWORDS:
copper-yttrium compounds, cyclic voltammetry, potentiostatic electrolysis, non-current diffusion saturation.