On the Electrochemical Synthesis of Nanodispersed, Submicrodispersed, and Microdispersed Powders of Molybdenum and Tungsten Carbides in Chloride-Oxide Melts

In the work, using the methods of cyclic voltammetry and open-circuit chronopotentiometry, and galvanostatic and potentiostatic electrolysis, the processes of the joint electroreduction of molybdate (tungstate) ions with carbonate ions against the background of a melt of potassium chloride at 1023–1173 K are studied. The possibility of the joint electrolysis of molybdenum (tungsten) and carbon in a potassium-chloride melt and the implementation on their basis of the electrochemical synthesis of molybdenum and tungsten carbides in the form of nanodispersed, submicrodispersed, and microdispersed powders. Samples of molybdenum and tungsten carbides are synthesized and characterized by X-ray phase analysis, laser particle-size analysis, and scanning electron microscopy.