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Sieradzki, K.
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article
Monolithic nanoporous copper by dealloying Mn–Cu
Abstract
<jats:p>Monolithic nanoporous copper was synthesized by dealloying Mn<jats:sub>0.7</jats:sub>Cu<jats:sub>0.3</jats:sub> 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.</jats:p>