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Characterization of Defects in Titanium Created by Hydrogen Charging
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SYSNO ASEP 0508732 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of Defects in Titanium Created by Hydrogen Charging Author(s) Hruška, P. (CZ)
Čízek, J. (CZ)
Knapp, J. (CZ)
Melikhova, O. (CZ)
Havela, L. (CZ)
Mašková, S. (CZ)
Lukáč, František (UFP-V) ORCIDNumber of authors 7 Source Title Acta Physica Polonica A. - : Polska Akademia Nauk - ISSN 0587-4246
Roč. 132, č. 5 (2017), s. 1606-1610Number of pages 5 s. Language eng - English Country PL - Poland Keywords vacancy formation energies ; spectroscopy ; positrons ; hydride Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Open access Institutional support UFP-V - RVO:61389021 UT WOS 000417870500039 EID SCOPUS 85037974834 DOI 10.12693/APhysPolA.132.1606 Annotation Hydrogen interaction with vacancies in alpha-Ti was investigated employing positron lifetime spectroscopy combined with ab initio theoretical modeling of vacancy-hydrogen complexes. Ab initio modeling revealed that multiple hydrogen atoms up to 7 can be trapped at vacancies in the alpha-Ti lattice. Trapped H atoms are located close to the nearest neighbor tetrahedral sites around the centre of vacancy. Lifetimes of positrons trapped at vacancies associated with various numbers of hydrogen atoms were calculated. Positron lifetime measurement of H-loaded alpha-Ti samples revealed that phase transition into the hydride phase introduced dislocations. Vacancies were created by H loading as well and agglomerated into small vacancy clusters. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020 Electronic address http://przyrbwn.icm.edu.pl/APP/PDF/132/app132z5p38.pdf
Number of the records: 1