Abstract
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 language | English |
|---|---|
| Article number | 1255 |
| Journal | Metals |
| Volume | 13 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2023 |
Bibliographical note
Publisher Copyright:© 2023 by the authors.
Funding
This research was funded by the Young Elite Scientist Sponsorship Program of the China Association for Science and Technology (No. YESS20210054) and the Independent Innovation Research Fund of Huazhong University of Science and Technology (2172021XXJS010).
| Funders | Funder number |
|---|---|
| China Association for Science and Technology | YESS20210054 |
| China Association for Science and Technology | |
| Huazhong University of Science and Technology | 2172021XXJS010 |
| Huazhong University of Science and Technology |
Keywords
- dealloying temperature
- dealloying time
- ligament
- nanoporous stainless steel
- vacuum thermal dealloying
ASJC Scopus subject areas
- General Materials Science
- Metals and Alloys