FREE VOLUMES AND THERMAL-STABILITY OF ELECTRO-DEPOSITED NANOCRYSTALLINE PD

Authors
WURSCHUM R GRUSS S GISSIBL B NATTER H HEMPELMANN R SCHAEFER HE
Citation
R. Wurschum et al., FREE VOLUMES AND THERMAL-STABILITY OF ELECTRO-DEPOSITED NANOCRYSTALLINE PD, Nanostructured materials, 9(1-8), 1997, pp. 615-618
Citations number
19
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
9
Issue
1-8
Year of publication
1997
Pages
615 - 618
Database
ISI
SICI code
0965-9773(1997)9:1-8<615:FVATOE>2.0.ZU;2-D
Abstract
The structure and thermal stability of electro-deposited nanocrystalli ne Pd was studied by means of positron lifetime spectroscopy, x-ray di ffraction, and transmission electron microscopy. In comparision to nan ocrystalline Pd prepared by gas-phase synthesis or severe plastic defo rmation, larger free volumes occur and the crystallite growth is retar ded. The enhanced structural stability is attributed to solute atom dr ag and to nanovoids which are decorated with light impurities and whic h may act as pinning centers for the crystallite interfaces. (C) 1997 Acta Metallurgica Inc.