Synthesizing Nanoporous Stainless Steel Films via Vacuum Thermal Dealloying

Xiaotao Liu, Xiaomeng Zhang, Maria Kosmidou, Michael J. Detisch, Thomas John Balk

Research output: Contribution to journalArticlepeer-review


Vacuum thermal dealloying is a recently developed technique and was newly introduced to produce nanoporous metals, due to its intriguing advantages, i.e., preventing oxidation and producing no chemical waste, etc. Here, we report on the fabrication of nanoporous stainless steel films by vacuum thermal dealloying of sputtered stainless steel–magnesium precursor films. It was found that crack-free nanoporous stainless steel films can be successfully attained under a broad temperature range of 450–600 °C, with a dealloying time of 0.5–2 h. The resulting structure and ligaments were temperature- and time-dependent, and moreover, the condition of “600 °C + 2 h” generated the most homogeneous structure. Moreover, small amounts of residual Mg were found at pore sites in the resultant structures, suggesting that the dealloying was not fully complete.

Original languageEnglish
Article number1255
Issue number7
StatePublished - Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 by the authors.


  • dealloying temperature
  • dealloying time
  • ligament
  • nanoporous stainless steel
  • vacuum thermal dealloying

ASJC Scopus subject areas

  • General Materials Science
  • Metals and Alloys


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