Abstract
The aim of this work was to examine the possibility of producing nickel silicides by the electrolysis of molten salts, containing silicon ions, on a nickel cathode. Possibility of electrodeposition of nickel disilicide from molten salts was investigated by thermodynamic calculation, voltametric investigation and electrolysis experiments. The electrochemical behavior of the NaCl–NaF–K2SiF6 molten salts system was studied by cyclic voltammetry. The electrolysis was carried out in a NaCl–NaF–K2SiF6 melt in a glassy carbon crucible at 7200C in argon atmosphere; a nickel plate was used as the cathode. Cathode products were analyzed by X-ray and JEM-2100F SEM. Coatings of nickel disilicide were deposited from NaCl-NaF-K2SiF6 melts on a Ni cathode at 7200C in argon atmosphere.
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