Electrodeposition of Tungsten, Molybdenum and Double Carbides of Tungsten (Molybdenum) and Nickel (Cobalt) from Low-Temperature Halide-Oxide Melts

Abstract

We investigated the processes of electrochemical deposition of metallic tungsten and molybdenum, carbides of molybdenum and tungsten by methods of cyclic voltammetry, electrolyses from halide-oxide melts at temperature 550 {degree sign}C. Conditions of joint electroreduction of fluoride complexes of tungsten and molybdenum, carbon dioxide and ions of nickel and cobalt in halide-oxide melts are found at temperature 550 {degree sign}C. Optimum conditions of obtaining of metallic tungsten and molybdenum, carbides of tungsten (molybdenum), double carbides tungsten with nickel (cobalt) from halide-oxide melts are determined.

Synthesis of Tantalum Powders in KBr−NaBr and KI−NaI Melts Using Electrochemical Pulverization

“…Nowadays, the mainstream of high‐temperature electrochemical technologies is widely developed. Deposits of various structure: dense solid, powdery, as well as dendritic ones, can be obtained by molten media electrolysis. The most developed method for producing deposits of refractory metals is metallothermic reduction in the molten alkali and /or alkali earth halides .…”