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Three-dimensional bimodal porous Cu comprises oriented Gasar pores and random dealloyed pores was prepared by chemically dealloying Gasar Cu-34.6wt% Mn alloy. The influence of dealloying parameters on slice samples was investigated, and a typical structure was fabricated in 10vol% HCl at 90°C for 12h of dealloying. The dealloyed morphology on the fracture was identical to that on the surface, with...
A combination of the Gasar and dealloying processes for fabricating a bimodal micro/nanoporous metal was proposed. Lotus-type, porous Cu–34.6wt% Mn alloy was prepared by metal–gas eutectic unidirectional solidification, i.e., the Gasar process. This Gasar Cu–Mn alloy was then subjected to dealloying treatment, and nanoporous Cu was prepared at various current levels and durations. Two different dealloyed...
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