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Heat load and deuterium plasma effects on SPS and WSP tungsten
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SYSNO ASEP 0440035 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Heat load and deuterium plasma effects on SPS and WSP tungsten Author(s) Vilémová, Monika (UFP-V) RID, ORCID
Matějíček, Jiří (UFP-V) RID, ORCID
Nevrlá, Barbara (UFP-V) RID
Chernyshova, M. (PL)
Gasior, P. (PL)Source Title Kudowa Summer School – Book of abstracts. - Warsaw : Institute of Plasma Physics and Laser Microfusion, 2014 / Jakubowska K. ; Czarnecka A. - ISSN 2083-5876
S. 86Number of pages 1 s. Publication form Medium - C Action Kudowa Summer School „Towards Fusion Energy“ Event date 09.06.2014-13.06.2014 VEvent location Kudowa Zdrój Country PL - Poland Event type WRD Language eng - English Country PL - Poland Keywords Tungsten ; Spark Plasma Sintering ; Heat loading ; Nuclear Fusion Subject RIV JJ - Other Materials Institutional support UFP-V - RVO:61389021 Annotation 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. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2015
Number of the records: 1