Developing scaling relations for the yield strength of nanoporous gold

Nicolas J. Briot, T. John Balk

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


In this work, the applicability of Gibson and Ashbys porous scaling relations to nanoporous metals is discussed, and an updated equation is proposed for relating the yield strength of nanoporous gold to the yield strength of individual gold ligaments that form the porous structure. This new relation is derived from experimental measurements obtained by small-scale tensile testing and by nanoindentation, and incorporates the average ligament diameter. Nanoindentation data, obtained experimentally by the authors as well as reported by others in the literature, are reconciled with tensile test measurements previously reported by the present authors. The values of ligament yield strength calculated with the new scaling relation are found to agree with data reported from mechanical testing of nanowires, and the scaling relation thus represents a bridge between nanowire and nanoporous metal behaviour. In addition, calculations of yield strength for nanoporous gold samples with various ligament size and relative density are consistent with the experimentally determined values.

Original languageEnglish
Pages (from-to)2955-2973
Number of pages19
JournalPhilosophical Magazine
Issue number27
StatePublished - Sep 22 2015

Bibliographical note

Publisher Copyright:
© 2015 Taylor & Francis.


  • cellular material
  • dealloying
  • gold
  • mechanical behaviour
  • porous
  • scaling relation
  • small-scale testing

ASJC Scopus subject areas

  • Condensed Matter Physics


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