Article
Small angle neutron scattering from nanocrystalline Pd and Cu compacted at elevated temperatures
MRS Online Proceedings
(2011)
Abstract
Nanocrystalline (n-) Cu and Pd, prepared by inert gas condensation (IGC) and in situ room temperature (RT) and elevated temperature (warm) compactions, have been studied by small angle neutron scattering (SANS). Previous work [1] on room temperature compacted and subsequently annealed n-Pd seemed to show that all the scattering could be accounted for by a distribution of pores. Analysis of more extensive SANS measurements, together with the results of prompt gamma activation analysis (PGAA), indicates that the SANS can be explained by the presence of pores and hydrogen. Warm compaction reduces the hydrogen impurity level, while increasing the bulk density and decreasing the pore size. This can lead to a dramatic hardness increase in these materials.
Disciplines
Publication Date
February 1, 2011
DOI
10.1557/PROC-351-319
Publisher Statement
© Materials Research Society 1994. Publisher's version of record: https://doi.org/10.1557/PROC-351-319
Citation Information
Paul G. Sanders, J. R. Weertman, J. G. Barker and R. W. Siegel. "Small angle neutron scattering from nanocrystalline Pd and Cu compacted at elevated temperatures" MRS Online Proceedings Vol. 351 (2011) p. 319 ISSN: 1946-4274 Available at: http://works.bepress.com/paul-sanders/53/