Abstract
Nanoporous gold thin films were prepared by dealloying and were completely crack-free, with a continuous ligament network across grain boundaries. Film stress increases during dealloying, and thermal cycling causes thermoelastic deformation. Ligament width coarsens during cycling to 200 °C, but at higher temperatures the porous structure densifies. The stability of nanoporous films may also depend on film thickness. From the biaxial film stress, the equivalent yield strength of nanoporous gold was calculated to be at least 1.8 GPa.
Original language | English |
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Pages (from-to) | 1018-1021 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 58 |
Issue number | 11 |
DOIs | |
State | Published - Jun 2008 |
Bibliographical note
Funding Information:Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research.
Keywords
- Dealloying
- Gold
- Nanoporous
- Thin film
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys