Production And Processing Of Tungsten-Based Powders In Thermal Plasma Systems

Authors:

Andrey Samokhin (Institute of Metallurgy and Materials Science, Russia),
Nikolay Alexeev (Institute of Metallurgy and Materials Science, Russia),
Andrey Fadeev (Institute of Metallurgy and Materials Science, Russia),
Alexey Dorofeev (Institute of Metallurgy and Materials Science, Russia)

Abstract:

The report presents the results of R&D of plasma-chemical production of W nanopowders, W-Cu, W-C, W-Ni-Fe powder nanocomposites, WC tungsten monocarbide, as well as spherical micropowders of these compounds for their use in modern 3D printing technologies. Plasma-chemical synthesis of tungsten nanopowder is based on the reduction of tungsten oxide compounds powders in a stream of hydrogen-containing low-temperature thermal plasma generated in an electric arc plasma torch. The synthesis of W-Cu and W-Ni-Fe nanocomposites is carried out using the reduction of a mixture of the metal oxides, Using the synthesized tungsten-based nanocomposites powders, spherical composite micropowders with a submicron structure can be manufactured by granulation of nanopowders and subsequent spheroidization of granules by melting in a low-temperature thermal plasma. The results of the development of DC arc plasma systems for the synthesis of nanopowders and micropowders spheroidization are presented.

DOI:

https://doi.org/10.59499/WP225371868