4.7 Article

Ordering kinetics of nanoporous FeCo during liquid metal dealloying and the development of nanofacets

Journal

SCRIPTA MATERIALIA
Volume 177, Issue -, Pages 38-43

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.10.007

Keywords

Porous material; Liquid metal dealloying; Ordering; Coarsening; Facets

Funding

  1. Ministry of Education, Culture, Sports, Science and Technology (MEXT, Japan) [18H05452]
  2. International Collaboration Center Institute for Materials Research (ICC-IMR, Tohoku University, Japan)
  3. Grants-in-Aid for Scientific Research [18H05452] Funding Source: KAKEN

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Three-dimensional interconnected nanoporous FeCo can be prepared by liquid metal dealloying. This study investigates the surface morphology and ordering kinetics of three-dimensional interconnected nanoporous FeCo. The chemical composition and dealloying temperature mutually influence the surface structure of the ligament scaffold. The ordering kinetics are accelerated by the surface-diffusion-driven coarsening in the nanoporous structure. Post-heat treatment leads to the development of precise nanofacets via the preferential growth of surface planes. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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