Erosion, permeation and outgassing performances of tin coating under/after hydrogen plasma iffadiation
An erosion behavior of TiN-coated stainless-steel (SS) surfaces was investigated during biased-limiter experiments within the Uragan-3M torsatron and during simulation experiments, which were performed with plasma-accelerator and glow-discharge (GD) plasmas. For a TiN-coated SS head-plate of a limit...
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| Datum: | 2000 |
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| Hauptverfasser: | , , , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2000
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| Schriftenreihe: | Вопросы атомной науки и техники |
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| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/78559 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Erosion, permeation and outgassing performances of tin coating under/after hydrogen plasma iffadiation / G.P. Glazunov, E.D. Volkov, V.P. Veremeyenko, N.A. Kosik, Al.A. Kutsyn, J. Langner, E. Langner, Yu.K. Mironov, N.I. Nazarov, J. Piekoszewski, M. Sadowski, J. Stanislawski, V.I. Tereshin // Вопросы атомной науки и техники. — 2000. — № 6. — С. 155-159. — Бібліогр.: 18 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | An erosion behavior of TiN-coated stainless-steel (SS) surfaces was investigated during biased-limiter experiments within the Uragan-3M torsatron and during simulation experiments, which were performed with plasma-accelerator and glow-discharge (GD) plasmas. For a TiN-coated SS head-plate of a limiter the arc ignition probability was found to be lower than 10-4 per plasma pulse. Possible physical mechanisms of this effect had been discussed. Within special vacuum stands, using thermal-desorption and mass-spectrometry methods, there were performed measurements of an outgassing rate and hydrogen permeability of TiNcoatings. The negligible outgassing from TiN-coated SS samples, during their heating up to 473 K, was observed after a cleaning procedure with a molecular hydrogen inflow under pressure of about 10-4 Torr, on contrary to the considerable increase of (q) rate for the irradiated samples. Measured values of the TiN-film hydrogen permeability were several times lower, and activation energy of the hydrogen permeation was considerably lower than that for the SS films (15 kJ/mole instead of 19.9 kJ/mole). The use of TiN-coated SS and diffusion membranes, for the reduction of the erosion, recycling, and hydrogen isotope inventory control, as well as for improvement of vacuum conditions, has been considered. |
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