Monolithic nanoporous copper by dealloying Mn-Cu

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

doi:10.1557/jmr.2006.0322

Monolithic nanoporous copper by dealloying Mn-Cu

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

Research output: Contribution to journal › Article › peer-review

276 Scopus citations

Abstract

Monolithic nanoporous copper was synthesized by dealloying Mn_0.7Cu_0.3 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 language	English (US)
Pages (from-to)	2611-2616
Number of pages	6
Journal	Journal of Materials Research
Volume	21
Issue number	10
DOIs	https://doi.org/10.1557/jmr.2006.0322
State	Published - Oct 1 2006

ASJC Scopus subject areas

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

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AU - Sieradzki, Karl

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AB - 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.

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Monolithic nanoporous copper by dealloying Mn-Cu

Abstract

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