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Heat load and deuterium plasma effects on SPS and WSP tungsten
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SYSNO ASEP 0440035 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Heat load and deuterium plasma effects on SPS and WSP tungsten Tvůrce(i) Vilémová, Monika (UFP-V) RID, ORCID
Matějíček, Jiří (UFP-V) RID, ORCID
Nevrlá, Barbara (UFP-V) RID
Chernyshova, M. (PL)
Gasior, P. (PL)Zdroj.dok. Kudowa Summer School – Book of abstracts. - Warsaw : Institute of Plasma Physics and Laser Microfusion, 2014 / Jakubowska K. ; Czarnecka A. - ISSN 2083-5876
S. 86Poč.str. 1 s. Forma vydání Nosič - C Akce Kudowa Summer School „Towards Fusion Energy“ Datum konání 09.06.2014-13.06.2014 Místo konání Kudowa Zdrój Země PL - Polsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova Tungsten ; Spark Plasma Sintering ; Heat loading ; Nuclear Fusion Vědní obor RIV JJ - Ostatní materiály Institucionální podpora UFP-V - RVO:61389021 Anotace In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/helium bubbles. The samples were subjected to thermal and plasma radiation loading. Thermally induced changes in the microstructure as well as hydrogen retention were evaluated. SPS and WSP samples showed distinct behavior. A characteristic behavior was also observed in areas of increased porosity, where decreased thermal conductivity played significant role. The heat load caused local melting and recrystallization that was inhomogeneous in the case of SPS samples. Presence of "pitted" grooves or cracks, suggesting the creation and release of gaseous compounds from the inside of the material was observed at WSP samples. Influence of the structural changes on the material performance will be discussed. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2015
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