Evolution of a bicontinuous nanostructure via a solid-state interfacial dealloying reaction. (June 2016)

• Record Type: Journal Article
• Authors: Wada, Takeshi; Yubuta, Kunio; Kato, Hidemi
• Is Part Of: Scripta materialia. Volume 118(2016)
• Page Start: 33
• Page End: 36
• Publication Date: 2016-06
• Subjects: Porous material -- Foam -- Interface diffusion -- Dealloying; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.03.008
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: 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. Graphical abstract: