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

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

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

10 Citations (Scopus)

Abstract

In situ small angle neutron scattering (SANS) was used to characterize the formation of the random 3-dimensional porous structure created during the free corrosion of a Ag 0.7A u0.3 alloy in concentrated HNO 3. The evolution of the porosity was followed in situ for a period of 21 hours. The average ligament width evolved from a size of approximately 6 nm following only 7 minutes of dealloying to approximately 22.5 nm after 21 hours of de-alloying. Using a model developed by N.F. Berk (Phys. Rev. Lett., 58 (1987) 2718) for the scattering properties of random porous media, we were able to characterize the average ligament width distribution as a function of time. Our results represent the first in situ nanoscale characterization of the formation of 3-dimensional porosity in a corrosion system.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages377-382
Number of pages6
Volume376
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 28 1994Dec 1 1994

Other

OtherProceedings of the 1994 MRS Fall Meeting
CityBoston, MA, USA
Period11/28/9412/1/94

Fingerprint

Ligaments
Neutron scattering
Porosity
Corrosion
Alloying
Porous materials
Scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Corcoran, S. G., Wiesler, D., Barker, J., & Sieradzki, K. (1995). In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying In Materials Research Society Symposium - Proceedings (Vol. 376, pp. 377-382). Materials Research Society.

In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying . / Corcoran, Sean G.; Wiesler, David; Barker, John; Sieradzki, Karl.

Materials Research Society Symposium - Proceedings. Vol. 376 Materials Research Society, 1995. p. 377-382.

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

Corcoran, SG, Wiesler, D, Barker, J & Sieradzki, K 1995, In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying in Materials Research Society Symposium - Proceedings. vol. 376, Materials Research Society, pp. 377-382, Proceedings of the 1994 MRS Fall Meeting, Boston, MA, USA, 11/28/94.
Corcoran SG, Wiesler D, Barker J, Sieradzki K. In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying In Materials Research Society Symposium - Proceedings. Vol. 376. Materials Research Society. 1995. p. 377-382
Corcoran, Sean G. ; Wiesler, David ; Barker, John ; Sieradzki, Karl. / In situ small angle neutron scattering investigation of Ag 0.7Au 0.3 dealloying Materials Research Society Symposium - Proceedings. Vol. 376 Materials Research Society, 1995. pp. 377-382
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