Diamond coatings exposure to fusion-relevant plasma conditions
| Autor: | D.L. Rudakov, Phillip John, Andrey Litnovsky, Per Petersson, S.W. Lisgo, Samuele Porro, J. I. B. Wilson, G. De Temmerman |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
inorganic chemicals
congenital hereditary and neonatal diseases and abnormalities Nuclear and High Energy Physics Materials science Material properties of diamond Doping technology industry and agriculture Analytical chemistry chemistry.chemical_element Diamond Chemical vapor deposition engineering.material Nuclear Energy and Engineering chemistry Molybdenum hemic and lymphatic diseases parasitic diseases engineering Surface modification General Materials Science Boron Carbon |
| Zdroj: | Journal of Nuclear Materials, 415, S161-S164 |
| DOI: | 10.1016/j.jnucmat.2010.10.005 |
| Popis: | Several types of diamond layers have been deposited on molybdenum tiles by chemical vapour deposition techniques, and exposed under erosion-dominated conditions in the SOL of TEXTOR in order to assess them as a suitable candidate for plasma-facing material. Post-exposure characterisation of physical properties and surface modification induced by the plasma was performed by SEM imaging, investigation of diamond surface by micro-Raman spectroscopy and deuterium retention measurements by NRA. The analyses evidenced that lightly boron-doped micro-crystalline diamond is performing better than undoped and heavily doped samples, and nano-crystalline diamond and diamond-like carbon, as it showed lower surface modification, lower presence of arcing traces at the surface and lower deuterium retention. High concentration of boron in the layers led to higher retention of deuterium, whereas undoped (insulating) diamond showed increased arcing activity. Nano-crystalline diamond and diamond-like carbon layers generally showed poorer mechanical properties. (C) 2010 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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