Effect of the Conditions of Formation of W–C Nanopowders in a Plasma Jet on the Synthesis of Hexagonal Tungsten Carbide
- Authors: Blagoveshchensky Y.V.1, Alexeev N.V.1, Samokhin A.V.1, Isaeva N.V.1, Sinaysky M.A.1, Tsvetkov Y.V.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
- Issue: Vol 10, No 3 (2019)
- Pages: 566-571
- Section: Plasmochemical Methods of Production and Treatment of Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/207916
- DOI: https://doi.org/10.1134/S2075113319030043
- ID: 207916
Cite item
Abstract
The effects of the conditions of a raw material introduction as well as mixing of it with a high-temperature gas flow under the plasma chemical synthesis of superdispersed powder of W–C have been studied. In the case of incomplete raw material evaporation and its fast quenching, preferred cubic tungsten carbide β-WC formation is found to occur, as well as nano- and microparticles with a complicated phase composition. In the case of complete raw material evaporation, the products of reducing synthesis are nanopowder of tungsten or semicarbide W2C depending on the amount of hydrocarbon introduced. There is a second stage of the process of low-temperature synthesis which leads to a single-phase of tungsten carbide α-WC formation. Complete evaporation of raw material must be ensured in the plasma chemical process for obtaining of α-WC powder with a maximum specific surface area.
About the authors
Yu. V. Blagoveshchensky
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: yuriblag@imet.ac.ru
Russian Federation, Moscow, 119334
N. V. Alexeev
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: alexeev@imet.ac.ru
Russian Federation, Moscow, 119334
A. V. Samokhin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: samokhin@imet.ac.ru
Russian Federation, Moscow, 119334
N. V. Isaeva
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: isaeva@imet.ac.ru
Russian Federation, Moscow, 119334
M. A. Sinaysky
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: ms18@mail.ru
Russian Federation, Moscow, 119334
Yu. V. Tsvetkov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAS)
Author for correspondence.
Email: tsvetkov@imet.ac.ru
Russian Federation, Moscow, 119334