Interaction of plasma with beryllium

Соколов, И. А.; Skakov, Маzhyn; Miniyazov, Arman; Tulenbergenov, Timur; Zhanbolatova, Gainiya

doi:10.1088/1742-6596/2064/1/012070

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…The method of tungsten surface carbidization using a beam-plasma discharge is described in [8,9] and implemented on a plasma-beam installation (PBI). A detailed description of the installation is presented in [10][11][12]. In paper [9], the temperature dependence of the carbidized layer formation on tungsten surface under plasma irradiation in the temperature range of 700-1700 °C was studied.…”

Section: Methodsmentioning

confidence: 99%

Research of the Structural-Phase State of Tungsten Surface Layer Cross-Section After Carbidization in a Beam-Plasma Discharge Usage Electron Microscopy Methods

Скаков

Baklanov

Zhanbolatova³

et al. 2023

jour

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This paper presents research results on the structural-phase state of a tungsten surface layer cross-section after carbidization in a beam-plasma discharge. Tungsten surface carbidization in a beam-plasma discharge was conducted in a plasma-beam installation (PBI). Research on the cross-section structure of the surface layer of tungsten samples after carbidization at temperatures of 1000 °C, 1200 °C, and 1400 °C was conducted using transmission and scanning electron microscopy. Based on the results of SEM studies, a multilayer EMF map and local elemental analysis were obtained, based on which the depth of penetration of carbon atoms into tungsten was evaluated. It is established that the penetration depth is ~20 µm. The surface layer fine structure was researched using TEM. For TEM analysis of the tungsten sample cross-section with a carbidized layer, sections were prepared by ion thinning using an Ion Slicer EM-09100 IS unit. According to the research results, it was revealed that after carbidization, tungsten is available in the surface layer mainly in the composition of carbides WC and W2C. On bright-field TEM images of the cross-section of the surface layer of tungsten samples after carbidization at a temperature of 1200 °C and 1400 °C, bending extinction contours are revealed, which indicate the elastically stressed state of the sample surface layer, which leads to bending-torsion of the foil.

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Section: Methodsmentioning

confidence: 99%

Research of the Structural-Phase State of Tungsten Surface Layer Cross-Section After Carbidization in a Beam-Plasma Discharge Usage Electron Microscopy Methods

Скаков

Baklanov

Zhanbolatova³

et al. 2023

jour

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“…The experiments on the implementation of the parameters of the tungsten test were carried out on the plasma-beam installation [ 39 , 40 , 41 ]. The tungsten samples were installed in the target assembly, which was located in the interaction chamber.…”

Section: Experimental Partmentioning

confidence: 99%

Influence of the Carbidized Tungsten Surface on the Processes of Interaction with Helium Plasma

et al. 2022

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This paper presents the results of experimental studies of the interaction of helium plasma with a near-surface tungsten carbide layer. The experiments were implemented at the plasma-beam installation. The helium plasma loading conditions were close to those expected in the ITER divertor. The technology of the plasma irradiation was applied in a stationary type linear accelerator. The impact of the helium plasma was realized in the course of the experiment with the temperatures of ~905 °C and ~1750 °C, which were calculated by simulating heat loading on a tungsten monoblock of the ITER divertor under the plasma irradiation at the load of 10 MW/m2 and 20 MW/m2, respectively. The structure was investigated with scanning microscopy, transmitting electron microscopy and X-ray analysis. The data were obtained showing that the surface morphology changed due to the erosion. It was found that the carbidization extremely impacted the plasma–tungsten interaction, as the plasma–tungsten interaction with the carbide layer led to the carbon sputtering and partial diffusion towards to the depth of the sample. According to these results, WC-based tungsten carbide is less protected against fracture by helium than W and W2C. An increase in temperature leads to much more extensive surface damage accompanied by the formation of molten and recrystallized flanges.

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Information and Analytical System for Processing of Research Results to Justify the Safety of Atomic Energy

et al. 2022

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This paper is devoted to the creation of an information and analytical system (IAS) which is under development to manage the data obtained in experiments and investigations to justify the safety of atomic energy, which the National Nuclear Center of the Republic of Kazakhstan (RSE NNC RK) has been conducting for over 30 years. The main components of the IAS determining its consumer capabilities is an analytical unit that will allow the creation of programs for planned experiments in view of the technical requirements for them and based on the results of previous experiments, generalized and consolidated by processing and comparison tools provided by the IAS. An important component of the IAS is a set of tools for the predictive calculation of the temperature of materials of test sections depending on a given change in the power of energy release in them, predictive calculation of the required power of energy release in materials depending on a given change in their temperature, formation of arrays of experimental information in digital format and graphical form, comparison of experiments and their data among themselves, and the formation of protocols of experiments with the possibility of choosing specific data and methods for their processing. It should be noted that the created IAS greatly simplifies the preparation for experiments.

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Interaction of plasma with beryllium

Cited by 6 publications

References 2 publications

Research of the Structural-Phase State of Tungsten Surface Layer Cross-Section After Carbidization in a Beam-Plasma Discharge Usage Electron Microscopy Methods

Research of the Structural-Phase State of Tungsten Surface Layer Cross-Section After Carbidization in a Beam-Plasma Discharge Usage Electron Microscopy Methods

Influence of the Carbidized Tungsten Surface on the Processes of Interaction with Helium Plasma

Information and Analytical System for Processing of Research Results to Justify the Safety of Atomic Energy

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