Hydrogen-induced defects and multiplication of dislocations in Palladium

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10315704" target="_blank" >RIV/00216208:11320/15:10315704 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jallcom.2014.12.155" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2014.12.155</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2014.12.155" target="_blank" >10.1016/j.jallcom.2014.12.155</a>

Result language

angličtina

Original language name

Hydrogen-induced defects and multiplication of dislocations in Palladium

Original language description

In the present work positron lifetime spectroscopy was employed for investigation of hydrogen-induced defects in Pd. Well annealed polycrystalline Pd samples were electrochemically charged with hydrogen and the development of defects with increasing hydrogen concentration was investigated. At low concentrations (alpha-phase region, x(H) < 0.017 H/Pd) hydrogen loading introduced vacancies surrounded by hydrogen atoms and characterized by a positron lifetime of approximate to 200 ps. When the hydrogen concentration exceeded 0.017 H/Pd the alpha-phase transformed into the hydrogen rich alpha'-phase. This generated dislocations characterized by a positron lifetime of approximate to 170 ps. Dislocations can accommodate a large volume mismatch between the alpha and the alpha'-phase. Hardness testing revealed that absorbed hydrogen made Pd harder. In the alpha-phase region hardness increased due to solid solution hardening caused by dissolved hydrogen. Dislocations created by the alpha to alp

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA13-09436S" target="_blank" >GA13-09436S: Non-destructive mapping of spatial distribution of defects in highly strained materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Volume of the periodical

645

Issue of the periodical within the volume

Supplement 1

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

"S312"-"S315"

UT code for WoS article

000360404100072

EID of the result in the Scopus database

2-s2.0-84939253804