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Open AccessArticle

Dealloying of Cu-Mg-Ca Alloys

1
Laboratoire de Chimie Inorganique, Faculté des Sciences, Université de Sfax, Ur-11-Es-73, Sfax 3029, Tunisia
2
Departament de Física, Centre de Recerca en Ciència i Enginyeria Multiescala de Barcelona, Universitat Politècnica de Catalunya-BarcelonaTech, 08019 Barcelona, Catalonia, Spain
3
Departament de Física, Universitat de Girona, 17071 Girona, Catalonia, Spain
*
Author to whom correspondence should be addressed.
Metals 2018, 8(11), 919; https://doi.org/10.3390/met8110919
Received: 18 October 2018 / Revised: 31 October 2018 / Accepted: 6 November 2018 / Published: 8 November 2018
(This article belongs to the Special Issue Nanoporous Metals)
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. View Full-Text
Keywords: amorphous materials; metallic glasses; biocompatible materials; corrosion; nanoporous copper amorphous materials; metallic glasses; biocompatible materials; corrosion; nanoporous copper
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MDPI and ACS Style

Ben Mbarek, W.; Pineda, E.; Escoda, L.; Suñol, J.J.; Khitouni, M. Dealloying of Cu-Mg-Ca Alloys. Metals 2018, 8, 919.

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