Hauptseite > Workflowsammlungen > Publikationsgebühren > Argon-seeded plasma exposure and oxidation performance of tungsten-chromium-yttrium smart alloys > print

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024 7 _ |a 10.1007/s42864-019-00016-7
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024 7 _ |a 2128/22702
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024 7 _ |a WOS:000877212000005
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037 _ _ |a FZJ-2019-03724
100 1 _ |a Schmitz, Janina
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245 _ _ |a Argon-seeded plasma exposure and oxidation performance of tungsten-chromium-yttrium smart alloys
260 _ _ |a Singapore
|c 2019
|b Springer Singapore
336 7 _ |a article
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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500 _ _ |a Missing Journal: Tungsten (Tungsten) = 2661-8036 (import from CrossRef)
520 _ _ |a Tungsten-chromium-yttrium (WCrY) smart alloys are foreseen as the first wall material for future fusion devices such as Demonstration Power Plant (DEMO). While suppressing W oxidation during accidental conditions, they should behave like pure W during plasma operation due to preferential sputtering of the lighter alloying elements Cr, Y, and W enrichment of the surface. In this paper, the erosion performance of WCrY and W samples simultaneously exposed to deuterium (D) plasma with the addition of 1% of the projectile ions being argon (Ar) ions at an ion energy of 120 eV is compared. With reference to the previous experiments at 120 eV in pure D plasma, the erosion for both WCrY and W is enhanced by a factor of ~ 7. Adding Ar to the D plasma suppresses significant W enrichment previously found for pure D plasma. To investigate the impact of the plasma exposure onto the oxidation performance, plasma-exposed and non-exposed reference samples were oxidised in a dry atmosphere. Results show, on the one hand, that the oxidation suppression of WCrY in comparison to pure W is preserved during the plasma performance. On the other hand, it becomes evident that edge effects imposed by the geometry of the samples used in plasma experiments play a significant role for the oxidation behaviour.
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700 1 _ |a Litnovsky, Andrey M.
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700 1 _ |a Klein, Felix
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700 1 _ |a Tan, Xiaoyue
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700 1 _ |a Breuer, Uwe
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700 1 _ |a Rasinski, Marcin
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700 1 _ |a Ertmer, Stephan
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700 1 _ |a Kreter, Arkadi
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700 1 _ |a Gonzalez-Julian, Jesus
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700 1 _ |a Bram, Martin
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700 1 _ |a Coenen, Jan Willem
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700 1 _ |a Linsmeier, Christian
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773 _ _ |a 10.1007/s42864-019-00016-7
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856 4 _ |u https://juser.fz-juelich.de/record/863725/files/20190709100222550.pdf
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