Počet záznamů: 1
Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa
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SYSNO ASEP 0548998 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Radiation damage evolution in pure W and W-Cr-Hf alloy caused by 5 MeV Au ions in a broad range of dpa Tvůrce(i) Macková, Anna (UJF-V) RID, ORCID, SAI
Fernandes, Sandrina (UJF-V)
Matějíček, Jiří (UFP-V) RID, ORCID
Vilémová, Monika (UFP-V) RID, ORCID
Holý, V. (CZ)
Liedke, M. O. (DE)
Martan, J. (CZ)
Vronka, Marek (FZU-D) ORCID, RID
Potoček, M. (CZ)
Bábor, P. (CZ)
Butterling, M. (DE)
Attallah, A. G. (DE)
Hirschmann, E. (DE)
Wagner, A. (DE)
Havránek, Vladimír (UJF-V) RID, SAI, ORCIDCelkový počet autorů 15 Číslo článku 101085 Zdroj.dok. Nuclear Materials and Energy. - : Elsevier
Roč. 29, DEC (2021)Poč.str. 15 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova fusion materials ; radiation damage ; structure analysis of defects ; W and W-Cr alloy ion irradiation Vědní obor RIV BG - Jaderná, atomová a mol. fyzika, urychlovače Obor OECD Nuclear physics Vědní obor RIV – spolupráce Ústav fyziky plazmatu - Hutnictví, kovové materiály
Fyzikální ústav - Fyzika pevných látek a magnetismusCEP LM2015056 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2018110 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CANAM II - 90056 - Ústav jaderné fyziky AV ČR, v. v. i. Způsob publikování Open access Institucionální podpora UJF-V - RVO:61389005 ; UFP-V - RVO:61389021 ; FZU-D - RVO:68378271 UT WOS 000718149900001 EID SCOPUS 85118541621 DOI https://doi.org/10.1016/j.nme.2021.101085 Anotace Pure W and W-Cr-Hf alloy which are prospective materials for nuclear fusion reactors, such as DEMO, were irradiated at room temperature with 5 MeV Au2+ ions with fluences between 4 x 10(14) and 1.3 x 10(16) ions.cm (-2) to generate various levels of lattice damage from about units up to tens of dpa. The distinct character of radiation damage accumulation, microstructure and defect nature have been observed in both pure W and W-Cr-Hf alloys, the latter exhibited interesting ability of damage reorganisation and defect size decrease at the higher ion fluences as determined by positron annihilation spectroscopy (PAS). High radiation damage rate in the irradiated layer has been evidenced in the W samples already at the lower Au-ion fluences compared to W-Cr-Hf samples, where the damage increased in steps with the increasing Au-ion fluence. The distinct defect accumulation was accompanied with the different Au-ion implanted distribution in the irradiated layer determined by Secondary Ion Mass Spectrometry (SIMS) as well as the thermal properties have shown the consequent worsening in the depth in good agreement with the Au-depth concentration profiles. TEM corroborated above mentioned findings, where the sub-surface layer exhibited defect release after the irradiation, the maximum of dislocation loop density has been identified in the depth according the predicted dpa (displacement particles per atom) maximum for the lower Au-ion fluences. Moreover, TEM shows the dislocation density band structure appeared in W-Cr-Hf samples exhibiting the high density defect band according the projected range of the Au-ions simultaneously with the additional layer with larger isolated dislocations pronounced in the higher depth as a growing function of Au-ion fluence. Such phenomenon was not observed in W samples. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2022 Elektronická adresa https://doi.org/10.1016/j.nme.2021.101085
Počet záznamů: 1