Dealloying of Cu-Mg-Ca alloys
PublisherMultidisciplinary Digital Publishing Institute (MDPI)
Rights accessOpen Access
The chemical dealloying of Cu-Mg-Ca alloys in free corrosion conditions was investigated for different alloy compositions and different leaching solutions. For some of the precursor alloys, a continuous, pure fcc copper with nanoporous structure can be obtained by dealloying in 0.04 M H2SO4 solution. Superficial nanoporous copper structures with extremely fine porous size were also obtained by dealloying in pure water and 0.1 M NaOH solutions. The dealloying of both amorphous and partially crystalline alloys was investigated obtaining bi-phase nanoporous/crystal composites with microstructures depending on the precursor alloy state. The fast dissolution of Mg and Ca makes the Cu-Mg-Ca system an ideal candidate for obtaining nanoporous copper structures with different properties as a function of different factors such as the alloy composition, the quenching process, and leaching conditions.
CitationMbarek Wael, B., Pineda, E., Escoda, L., Suñol, J.J., Khitouni, M. Dealloying of Cu-Mg-Ca alloys. "Metals", 8 Novembre 2018, vol. 8, núm. 11, p. 919-932.