Open AccessINVESTIGATION OF TUNGSTEN SURFACE CARBIDIZATION UNDER PLASMA IRRADIATION
Author(s) -
Gainiya Zhanbolatova,
Arman Miniyazov,
Timur Tulenbergenov,
И. А. Соколов,
Olga Bukina
Publication year - 2022
Publication title -
vestnik nâc rk
Language(s) - English
Resource type - Journals
eISSN - 1729-7885
pISSN - 1729-7516
DOI - 10.52676/1729-7885-2021-3-37-43
Subject(s) - irradiation , tungsten , materials science , surface layer , fluence , diffusion , plasma , analytical chemistry (journal) , tungsten carbide , layer (electronics) , chemistry , metallurgy , composite material , chromatography , thermodynamics , physics , quantum mechanics , nuclear physics
This paper presents the results of a study of the formation of a carbidized layer under various experimental conditions and the choice of optimal parameters for carbidization of a tungsten surface under plasma irradiation. To study the effect of the surface temperature of a tungsten sample and the duration of plasma irradiation, experiments were carried out at a sample surface temperature of 1300 °C and 1700 °C with an irradiation duration of 300–2400 s. Analysis of the research results showed that the maximum formation of W 2 C on the surface is observed at a test temperature of 1700 °C. At a temperature of 1300 °C, the phase composition of the carbidized layer depends on the duration of plasma irradiation. According to the literature analysis, the formation of WC occurs on the surface of tungsten, from which C diffuses into the particle and forms the underlying layer of W 2 C. With an increase in the ion fluence, depending on the irradiation time and the temperature of the sample surface, the diffusion of C into W accelerates, the WC content decreases, and W 2 C becomes the dominant carbide compound.