Preparation of hierarchical porous metals by two-step liquid metal dealloying

Takeshi Wada, Pierre Antoine Geslin, Hidemi Kato

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


A hierarchical porous metal has been prepared by two-step liquid metal dealloying using an alloy precursor containing two soluble components and two metal baths. After the first dealloying step, one of the soluble components is dissolved and a coarse porous structure is formed. After a shorter dealloying step in another melt, the other soluble component is dissolved and a fine porous structure is formed within the previously formed coarse ligaments. The resultant porous metal presents a hierarchical morphology with a bimodal pore distribution, resulting in a higher porosity and surface-area-to-volume ratio than what can be formed by one-step dealloying methods.

Original languageEnglish
Pages (from-to)101-105
Number of pages5
JournalScripta Materialia
Publication statusPublished - 2018 Jan 1


  • Cellular materials
  • Dealloying
  • Foams
  • Iron alloys
  • Porous material


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