Behavior and microstructural changes in different tungsten-based materials under pulsed plasma loading

0468206 - ÚFP 2017 RIV NL eng J - Journal Article
Vilémová, Monika - Pala, Zdeněk - Jäger, Aleš - Matějíček, Jiří - Chernyshova, M. - Kowalska-Strzeciwilk, E. - Gribkov, V. A. - Janata, Marek
Behavior and microstructural changes in different tungsten-based materials under pulsed plasma loading.
Nuclear Materials and Energy. Roč. 9, December (2016), s. 123-127. E-ISSN 2352-1791.
[International Conference of Fusion Reactor Material (ICFRM-17) /17./. Aachen, 11.10.2015-16.10.2015]
R&D Projects: GA ČR(CZ) GA14-12837S
Institutional support: RVO:61389021 ; RVO:68378271
Keywords : ODS tungsten * yttrium oxide * porosity * phase stability * monoclinic phase * plasma focus * damage * erosion
Subject RIV: JJ - Other Materials; JJ - Other Materials (FZU-D)
http://dx.doi.org/10.1016/j.nme.2016.06.004

In this study, morphological, microstructural and phase changes of four types of tungsten materials after exposure to dense deuterium plasma were examined. The microstructures of the prepared materials mutually differ by the porosity, grain size and phase content. It was found that inherent porosity of sintered materials leads to a specific mechanism of erosion and might be a significant source of dust in the case of materials with higher porosity. Further, a preferential erosion of the dispersed particles by melting and evaporation and subsequent formation of thin film on the surface of W-Y2O3 was described as well.
Permanent Link: http://hdl.handle.net/11104/0266056