Monolithic nanoporous copper by dealloying Mn-Cu

J. R. Hayes, A. M. Hodge, J. Biener, A. V. Hamza, Karl Sieradzki

Research output: Contribution to journalArticlepeer-review

233 Scopus citations

Abstract

Monolithic nanoporous copper was synthesized by dealloying Mn0.7Cu0.3 by two distinct methods: potentiostatically driven dealloying and free corrosion. Both the ligament size and morphology were found to be highly dependent on the dealloying methods and conditions. For example, ligaments from 16 nm-125 nm were obtained by dealloying either electrochemically or by free corrosion, respectively. Optimization of the starting Mn-Cu alloy microstructure allowed us to synthesize uniform porous structures; but we found cracking to be unavoidable. Despite the presence of unavoidable defects, the nanoporous material still exhibits higher than expected yield strength.

Original languageEnglish (US)
Pages (from-to)2611-2616
Number of pages6
JournalJournal of Materials Research
Volume21
Issue number10
DOIs
StatePublished - Oct 1 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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