@article{660744f980d84c0e87e067bf4f81cf2d,
title = "Irradiation Damage Independent Deuterium Retention in WMoTaNbV",
abstract = "High entropy alloys are a promising new class of metal alloys with outstanding radiation resistance and thermal stability. The interaction with hydrogen might, however, have desired (H storage) or undesired effects, such as hydrogen-induced embrittlement or tritium retention in the fusion reactor wall. High entropy alloy WMoTaNbV and bulk W samples were used to study the quantity of irradiation-induced trapping sites and properties of D retention by employing thermal desorption spectrometry, secondary ion mass spectrometry, and elastic recoil detection analysis. The D implantation was not found to create additional hydrogen traps in WMoTaNbV as it does in W, while 90 at% of implanted D is retained in WMoTaNbV, in contrast to 35 at% in W. Implantation created damage predicted by SRIM is 0.24 dpa in WMoTaNbV, calculated with a density of 6.044×1022 atoms/cm3. The depth of the maximum damage was 90 nm. An effective trapping energy for D in WMoTaNbV was found to be about 1.7 eV, and the D emission temperature was close to 700 °C.",
keywords = "deuterium, elastic recoil, fusion, high entropy alloy, hydrogen, metals, secondary ion, thermal desorption",
author = "Anna Liski and Tomi Vuoriheimo and Pasi Jalkanen and Kenichiro Mizohata and Eryang Lu and Jari Likonen and Jouni Heino and Kalle Heinola and Yevhen Zayachuk and Anna Widdowson and Ko-Kai Tseng and Che-Wei Tsai and Jien-Wei Yeh and Filip Tuomisto and Tommy Ahlgren",
note = "Funding Information: This work was financially supported by the “High Entropy Materials Center” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) and from the Project NSTC 111-2634-F-007-008-by National Science and Technology Council (NSTC) in Taiwan. This work has been carried out within the framework of the EUROfusion consortium and has received funding from the Euratom research and training programm 2014–2018 and 2019–2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was supported by Tekniikan edist{\"a}miss{\"a}{\"a}ti{\"o} and Waldemar von Frenkells stiftelse. Partial funding from Academy of Finland grants 315082, 321659 and 333228 is acknowledged. Open access funding provided by University of Helsinki. Publisher Copyright: {\textcopyright} 2022 by the authors.",
year = "2022",
month = oct,
day = "19",
doi = "10.3390/ma15207296",
language = "English",
volume = "15",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI",
number = "20",
}
