Journal
MATERIALS LETTERS
Volume 162, Issue -, Pages 273-276Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2015.10.014
Keywords
Porous materials; Dealloying; Amorphous materials; Ag-Pd-Cu-Si alloy
Funding
- Strategic Priority Research Program of the Chinese Academy of Sciences, China: SJ10-recoverable scientific experiment satellite [XDA04020411, XDA04020202-11]
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Nanoporous bi-metallic Ag-Pd alloys were synthesized by dealloying of amorphous Ag-Pd-Cu-Si alloys in acid solutions. Less noble Cu and Si elements were removed from the amorphous precursors by free dealloying process. The ligament with the characteristic width of less than 100 nm is composed of Ag grains with the solid soluted Pd, and the average grain size is about 50 nm. The present work shows that the wide composition range and microstructure homogeneity of amorphous alloys makes them potential to obtain nanoporous alloys with tunable composition by simple dealloying process. (C) 2015 Elsevier B.V. All rights reserved.
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