Hydrogen-Induced Hardening in Palladium

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10316216" target="_blank" >RIV/00216208:11320/15:10316216 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.365.297" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/DDF.365.297</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.365.297" target="_blank" >10.4028/www.scientific.net/DDF.365.297</a>

Result language

angličtina

Original language name

Hydrogen-Induced Hardening in Palladium

Original language description

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 during hydrogen loading was investigated. At low concentrations (a-phase, xH < 0.017 H/Pd) hydrogen loading introduced vacancies. When the hydrogen concentration exceeds 0.017 H/Pd, particles of hydrogen rich a'-phase are formed. This generates dislocations in the sample in order to accommodate the volume mismatch between the a and the a'-phase. Moreover, additional vacancies are introduced into the sample by crossing dislocations. Vickers hardness testing revealed that absorbed hydrogen causes hardening of the sample. In the a-phase region the hardness increases due to solid solution hardening caused by dissolved hydrogen. At higher hydrogen concentrations when dislocations were created hardness increases due to strain hardening caused by dislocations.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JG - Metallurgy, metal materials

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

Article name in the collection

Defect and Diffusion Forum

ISBN

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ISSN

1012-0386

e-ISSN

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Number of pages

8

Pages from-to

297-304

Publisher name

Trans Tech Publications

Place of publication

Switzerland

Event location

Paris; France

Event date

Jun 23, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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