Journal
SCRIPTA MATERIALIA
Volume 118, Issue -, Pages 33-36Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.03.008
Keywords
Porous material; Foam; Interface diffusion; Dealloying
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Funding
- JSPS KAKENHI [15K06478, 25246009]
- Grants-in-Aid for Scientific Research [15K06478, 25246009] Funding Source: KAKEN
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The solid dealloying reaction was investigated using (Fe,Cr)-Ni and Mg diffusion couples. Ni selectively reacted with Mg and the remaining Fe and Cr formed various topologies. An etching treatment provided interconnected Fe-Cr alloy with a ligament width below 200 nm, which is about one order of magnitude finer than that obtained for dealloying with Mg melt. The formation of ordered single-crystal nanofilaments at the dealloying front suggests that the topology evolved via the recently proposed interfacial spinodal decomposition and diffusion-coupled growth mechanism. (C) 2016 Elsevier Ltd. All rights reserved.
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