METHOD FOR PRODUCING HIGH ENTROPY CARBIDE TiNbZrHfTaC Russian patent published in 2023 - IPC C01B32/90 B22F9/14 B22F9/04 

FIELD: powder metallurgy.

SUBSTANCE: invention relates to the production of high-entropy materials. To obtain high-entropy carbide TiNbZrHfTaC_5, powders of titanium oxide TiO₂, niobium oxide Nb₂O₅, zirconium oxide ZrO₂, hafnium oxide HfO₂, tantalum oxide Ta₂O₅ and x-ray amorphous carbon are mixed in an equimolar ratio and an electrically fusible link is pressed from the resulting mixture. An arc discharge is generated by a coaxial magnetoplasma accelerator with a graphite inner cylinder of a cylindrical electrically conductive barrel and with a composite central electrode made of a graphite tip and a brass shank. They act on an electrically fusible jumper to form an electric discharge plasma. In this case, the jumper is preliminarily placed between the inner cylinder of the electrically conductive accelerator barrel and its graphite tip, on top of a conductive carbon layer deposited on the surface of the insulator separating the electrically conductive barrel from the central electrode. A plasma jet is formed and flows into a chamber previously evacuated and filled with argon at normal atmospheric pressure and room temperature, and the finished high-entropy carbide is collected from the inner walls of the chamber.

EFFECT: production of high-entropy carbide without impurities.

1 cl, 3 dwg