Electrochemical dealloying with simultaneous phase separation

Yuqiao Zeng, Bernard Gaskey, Ellen Benn, Ian McCue, Gina Greenidge, Kenneth Livi, Xuhai Zhang, Jianqing Jiang, Jonah Elebacher*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Dealloying is a selective corrosion process during which the more electrochemically active elements in a parent alloy dissolve while the remaining more noble atoms diffuse along the solid-electrolyte interface, resulting in the formation of a nanoporous microstructure composed of core-shell ligaments. In this work, we study an extension of the physics of dealloying in which the parent alloys (Cu[sbnd]Fe[sbnd]Mn alloys) contained an engineered composition of elements selected such that, upon dissolution of one of them, the remaining elements phase separate as they become concentrated in the undissolved ligaments. Such simultaneous dealloying and phase separation leads to the formation of rich variety of new porous structures containing nanocomposite ligaments, as well as unanticipated structure evolution such as nanowire growth that are attributed to solution side effects.

Original languageEnglish (US)
Pages (from-to)8-17
Number of pages10
JournalActa Materialia
StatePublished - Jun 1 2019
Externally publishedYes


  • Corrosion
  • Dealloying
  • Nanocomposite
  • Nanoporous
  • Phase separation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys


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