In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying under potential control

Sean G. Corcoran, David G. Wiesler, Karl Sieradzki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

In situ small angle neutron scattering (SANS) was used to characterize the formation of the random 3-dimensional porous structure created during the dealloying of a Ag 0.7Au 0.3 alloy under potential control. Using a model developed by N.F. Berk for the scattering properties of random porous media, we were able to characterize the average ligament width as a function of time during the dealloying process. We find that the coarsening of the average ligament width is strongly dependent upon the value of the applied potential. Our results represent the first in situ nanoscale characterization of the 3-dimensional formation of porosity in a dealloying system under potential control.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsP.C. Andricacos, S.G. Concoran, J.L. Delplancke, T.P. Moffat, P.C. Searson
PublisherMaterials Research Society
Pages93-98
Number of pages6
Volume451
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1996 MRS Fall Meeting - Boston, MA, USA
Duration: Dec 2 1996Dec 5 1996

Other

OtherProceedings of the 1996 MRS Fall Meeting
CityBoston, MA, USA
Period12/2/9612/5/96

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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