Mechanical Properties of FeCr-Based Composite Materials Elaborated by Liquid Metal Dealloying towards Bioapplication

Morgane Mokhtari, Christophe Le Bourlot, Jannick Duchet-Rumeau, Eugénie Godet, Pierre Antoine Geslin, Sylvain Dancette, Takeshi Wada, Hidemi Kato, Eric Maire

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Liquid metal dealloying (LMD) is a new technology to create porous materials. From a (FeCr)x-Ni1–x precursor, it is possible to get a bicontinuous structure of FeCr and Mg: a metal–metal composite. An etching step removes the Mg solid-state solution phase to give a metal–air composite. The last step, polymer infiltration, gives metal–polymer composites. Herein, metal–metal, metal–air, and metal–polymer (rubbery or glassy polymers) with three different phase ratios are elaborated by LMD from Ni-based precursors and their mechanical properties are analyzed. A full polymer infiltration into the pores is obtained and the epoxy polymer properties are not affected by the metallic foam presence. Concerning control of the mechanical properties, the material's second-phase selection is a key factor. Herein, it is shown that the mechanical properties are easily designed by optimizing phase ratio, ligament size, and second-phase type and that these materials are promising materials for biomedical applications.

Original languageEnglish
Article number2000381
JournalAdvanced Engineering Materials
Volume22
Issue number12
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • composite materials
  • liquid metal dealloying
  • mechanical properties
  • metallic foam
  • nanoindentation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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