Tungsten Surface Erosion by Hydrogen Plasma Irradiation

B.K. Rakhadilov; M.K. Skakov; T.R. Tulenbergenov

doi:10.4028/www.scientific.net/KEM.736.46

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 736Tungsten Surface Erosion by Hydrogen Plasma...

Tungsten Surface Erosion by Hydrogen Plasma Irradiation

Abstract:

Changes in the structure and the tungsten surface erosion by hydrogen plasma irradiation are studied in the article. It is shown that the change in the surface topography as a result of the development of the non-homogeneous surface etching is observed after surface irradiation. Metallographic analysis showed that the degree of relief is low in comparison with tungsten sample irradiated at T=700°C by tungsten samples irradiation at T=1000°C and 1500°C. However, these samples have small cracks, while the temperature increases the size and number of cracks also increases. It is determined, that the surface roughness varies depending on the irradiation temperature after hydrogen plasma exposure. The greatest increase in the roughness occurs in samples irradiated at T=1500°C, which is associated with the formation of small cracks in the surface layer. It is shown that a degree of surface erosion is increased with increase of the target temperature and the ion energy. Appreciable tungsten erosion due to irradiation of the plasma flow, plasma simulating stationary mode occurs only at relatively high temperatures of the target.

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Periodical:

Key Engineering Materials (Volume 736)

Pages:

46-51

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.736.46

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Online since:

June 2017

Authors:

B.K. Rakhadilov*, M.K. Skakov, T.R. Tulenbergenov

Keywords:

Erosion, Irradiation, Plasma, Structure, Tungsten

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References

[1] Loarte A., Saibene G., SartoriR. et al. Transient heat loads in current fusion experiments, extrapolation to ITER and consequences for its operation, J. Physica Scripta. 128 (2007) 222 - 228.

DOI: 10.1088/0031-8949/2007/t128/043

Google Scholar

[2] Skinner C.H., Haasz A.A., Alimov V. Kh., Bekris N., Causey R.A., Clark R.E.H., Coad J.P., Davis J.W., Doerner R.P., May-er M., Pisarev A., Roth J., Tanabe T., J. Fusion Sci. Technol., 54 (2008) 891.

DOI: 10.13182/fst54-891

Google Scholar

[3] Pitts R.A. et al. — J. of Nuclear Materials, 415 (2011) 957.

Google Scholar

[4] M. Poznyaki., N. S Klimov, V. L Podkovyrov et al, .J. INST. Ser. Fusion, 4 (2012) 23-33.

Google Scholar

[5] V. Kurnaev, A. Kolodeshnikov, T. Tulenbergenov, I Sokolov, Investigation of plasma–surface interaction at plasma beam facilities, J. Journal of Nuclear Materials. 463 (2015) 228-232.

DOI: 10.1016/j.jnucmat.2014.12.076

Google Scholar

[6] B. K Rahadilov, T. R Tulenbergenov, S.V. Sokolov et al. Study of plasma interaction with the tungsten surface in plazmennopuchkovoy installation, J. Bulletin NNC. (2015) 61-65.

Google Scholar

[7] D. Yu. Suchugov, G.V. Shapovalov, B. Zh. Chektybaev, M.K. Skakov, N.A. Gasilov, A.D. Sadykov The numerical code TOKSCEN for modelling plasma evolution in tokamaks, J. Nuclear Fusion. (2015).

DOI: 10.1088/0029-5515/55/4/043017

Google Scholar