Please use this identifier to cite or link to this item: http://repository.kpi.kharkov.ua/handle/KhPI-Press/56464
Title: Electrochemical Production of Tungsten Powders from Tungsten Hardmetal Waste
Authors: Tulskiy, Gennadiy
Liashok, L. V.
Osmanova, M. P.
Kolupaev, I.N.
Keywords: tungsten; electrochemical reduction; melt; particle size; electrolysis; statistical analysis
Issue Date: 2020
Publisher: Springer Science
Citation: Electrochemical Production of Tungsten Powders from Tungsten Hardmetal Waste / G. G. Tul’skij // Powder Metallurgy and Metal Ceramics. – 2020. – Vol. 58 (9-10). – P. 499-502.
Abstract: Hardmetals intended to perform in harsh operating conditions are developed with the use of metallic powders, in particular, tungsten powders. The growing consumption of tungsten in industry necessitates the improvement of techniques employed to produce it from industrial waste. The objective of this research effort was to reduce metallic tungsten (as a powder) from chloride and chloride–fluoride melts and determine the factors influencing its particle size. The starting material was tungsten oxide (WO3) produced electrochemically from processed raw material (VK-6 tungsten carbide pseudoalloy). The melts were KCl–NaCl–CsBr and NaCl–KCl–CsBr–Na3WO3F3 eutectic mixtures. When the melt with a high WO2F42– content was subjected to electrolysis, tungsten precipitated as a superfine powder. The precipitate morphology showed that the tungsten particl esize was dependent on electrolysis conditions. A relatively inexpensive and effective method of producing tungsten powders was developed upon the research.
URI: http://repository.kpi.kharkov.ua/handle/KhPI-Press/56464
Appears in Collections:Кафедра "Технічна електрохімія"

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