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2014 | 125 | 3 | 752-755
Article title

Hydrogen-Induced Defects in Palladium

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Abstracts
EN
In the present work positron annihilation spectroscopy was employed for investigation of hydrogen-induced defects in Pd. Well annealed Pd samples were electrochemically charged with hydrogen and development of defects with increasing hydrogen concentration x_{H} was investigated. At low concentrations (α-phase, x_{H} < 0.017 H/Pd) hydrogen loading introduced vacancies, since absorbed hydrogen segregating at vacancies lowers remarkably the vacancy formation energy. When hydrogen concentration exceeds 0.017 H/Pd, particles of palladium hydride (PdH) are formed. Stress induced by growing PdH particles leads to plastic deformation which generates dislocations and vacancies in the sample.
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Contributors
author
  • Faculty of Mathematics and Physics, Charles University in Prague V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University in Prague V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University in Prague V Holešovičkách 2, Praha 8, CZ-180 00, Czech Republic
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv125n319kz
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