Influence of helium plasma on the structural state of the surface carbide layer of tungsten
This paper presents the results of the experimental studies of the helium plasma interaction with a surface carbide layer of tungsten. The experiments were carried out on a plasma beam installation (PBI) at a constant energy of incoming ions of 2 keV and at a surface temperature of the tungsten carb...
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AIMS Press
2023-08-01
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| Online Access: | https://www.aimspress.com/article/doi/10.3934/matersci.2023040?viewType=HTML |
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| author | Mazhyn Skakov Arman Miniyazov Victor Baklanov Alexander Gradoboev Timur Tulenbergenov Igor Sokolov Yernat Kozhakhmetov Gainiya Zhanbolatova Ivan Kukushkin |
| author_facet | Mazhyn Skakov Arman Miniyazov Victor Baklanov Alexander Gradoboev Timur Tulenbergenov Igor Sokolov Yernat Kozhakhmetov Gainiya Zhanbolatova Ivan Kukushkin |
| author_sort | Mazhyn Skakov |
| collection | DOAJ |
| description | This paper presents the results of the experimental studies of the helium plasma interaction with a surface carbide layer of tungsten. The experiments were carried out on a plasma beam installation (PBI) at a constant energy of incoming ions of 2 keV and at a surface temperature of the tungsten carbide layer of ~905 and ~1750 ℃. The local parameters (T<sub>e</sub>, n<sub>0</sub>) of the helium plasma were evaluated using the probe method and spectrometric analysis of the plasma composition. The helium plasma irradiated two types of the carbide layer on the tungsten surface, WC and W<sub>2</sub>C. The mechanisms of changing the tungsten surface morphology in the result of the plasma irradiation have been described. The study of the surface structure of the tungsten samples with a carbide layer of two types (WC, W<sub>2</sub>C) after the exposure to the helium plasma has revealed two different types of the formation of helium bubbles and changes in the surface morphology. The physical mechanism of the formation of helium bubbles consists in the capture of helium atoms by the thermal vacancies generated at high temperature by the material surface. However, with a significant increase in temperature to 1750 ℃, the formation of the bubbles was no longer observed and the sample surface had a developed coral-like structure with crystallographically oriented grains. |
| first_indexed | 2024-03-11T17:44:50Z |
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| institution | Directory Open Access Journal |
| issn | 2372-0484 |
| language | English |
| last_indexed | 2024-03-11T17:44:50Z |
| publishDate | 2023-08-01 |
| publisher | AIMS Press |
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| series | AIMS Materials Science |
| spelling | doaj.art-665991cd82a64724ad7f1f21e77eda722023-10-18T08:05:27ZengAIMS PressAIMS Materials Science2372-04842023-08-0110472574010.3934/matersci.2023040Influence of helium plasma on the structural state of the surface carbide layer of tungstenMazhyn Skakov0Arman Miniyazov1Victor Baklanov 2Alexander Gradoboev3Timur Tulenbergenov4Igor Sokolov5Yernat Kozhakhmetov6Gainiya Zhanbolatova7Ivan Kukushkin81. National Nuclear Center of the Republic of Kazakhstan, Kurchatov, Kazakhstan3. Shakarim University, Semey, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan 3. Shakarim University, Semey, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan4. National Research Tomsk Polytechnic University, Tomsk, Russia2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan 3. Shakarim University, Semey, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan 3. Shakarim University, Semey, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, Kazakhstan2. "Institute of Atomic Energy" Branch RSE NNC RK, Kurchatov, KazakhstanThis paper presents the results of the experimental studies of the helium plasma interaction with a surface carbide layer of tungsten. The experiments were carried out on a plasma beam installation (PBI) at a constant energy of incoming ions of 2 keV and at a surface temperature of the tungsten carbide layer of ~905 and ~1750 ℃. The local parameters (T<sub>e</sub>, n<sub>0</sub>) of the helium plasma were evaluated using the probe method and spectrometric analysis of the plasma composition. The helium plasma irradiated two types of the carbide layer on the tungsten surface, WC and W<sub>2</sub>C. The mechanisms of changing the tungsten surface morphology in the result of the plasma irradiation have been described. The study of the surface structure of the tungsten samples with a carbide layer of two types (WC, W<sub>2</sub>C) after the exposure to the helium plasma has revealed two different types of the formation of helium bubbles and changes in the surface morphology. The physical mechanism of the formation of helium bubbles consists in the capture of helium atoms by the thermal vacancies generated at high temperature by the material surface. However, with a significant increase in temperature to 1750 ℃, the formation of the bubbles was no longer observed and the sample surface had a developed coral-like structure with crystallographically oriented grains.https://www.aimspress.com/article/doi/10.3934/matersci.2023040?viewType=HTMLtungstentungsten carbide layersimulation experimentshelium plasmaplasma beam installationstructural state of tungsten |
| spellingShingle | Mazhyn Skakov Arman Miniyazov Victor Baklanov Alexander Gradoboev Timur Tulenbergenov Igor Sokolov Yernat Kozhakhmetov Gainiya Zhanbolatova Ivan Kukushkin Influence of helium plasma on the structural state of the surface carbide layer of tungsten AIMS Materials Science tungsten tungsten carbide layer simulation experiments helium plasma plasma beam installation structural state of tungsten |
| title | Influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| title_full | Influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| title_fullStr | Influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| title_full_unstemmed | Influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| title_short | Influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| title_sort | influence of helium plasma on the structural state of the surface carbide layer of tungsten |
| topic | tungsten tungsten carbide layer simulation experiments helium plasma plasma beam installation structural state of tungsten |
| url | https://www.aimspress.com/article/doi/10.3934/matersci.2023040?viewType=HTML |
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