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An in-situ small angle x ray scattering analysis of nanopore formation during thermally induced chemical dealloying of brass thin foils

Lin, Bao, Döbeli, Max, Mudie, Stephen, Hawley, Adrian, Hodgson, Peter, Kong, Lingxue, Spolenak, Ralph and Dumee, Ludovic 2018, An in-situ small angle x ray scattering analysis of nanopore formation during thermally induced chemical dealloying of brass thin foils, Scientific reports, vol. 8, no. 1, doi: 10.1038/s41598-018-33787-z.

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Title An in-situ small angle x ray scattering analysis of nanopore formation during thermally induced chemical dealloying of brass thin foils
Author(s) Lin, Bao
Döbeli, Max
Mudie, Stephen
Hawley, Adrian
Hodgson, Peter
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Spolenak, Ralph
Dumee, LudovicORCID iD for Dumee, Ludovic orcid.org/0000-0002-0264-4024
Journal name Scientific reports
Volume number 8
Issue number 1
Article ID 15419
Total pages 10
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2018-10-18
ISSN 2045-2322
Keyword(s) Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
SPONTANEOUS DISSOLUTION
POROSITY EVOLUTION
POROUS COPPER
MORPHOLOGY
KINETICS
ALLOY
CU
DEZINCIFICATION
FABRICATION
MECHANISM
Summary The development of non-noble nano-porous metal materials is hindered by surface oxidation reactions and from the difficulty to generate long range order pore arrays. Dealloying is a promising route to generate such materials by selective chemical etching of metal alloy materials. This process can generate nano-metal materials with superior plasmonic, catalytic and adsorptive surface properties. Here, the impact of properties of the etching solution on the dealloying process to generate nano-pores across thin film alloys was investigated by in-situ SAXS dealloying experiments. Single phase CuZn alloys were used as model materials to evaluate the influence of the solution temperature on the pore formation kinetics. This novel analysis allowed to visualize the change in surface properties of the materials over time, including their surface area as well as their pore and ligament sizes. The dealloying kinetics at the very early stage of the process were found to be critical to both stable pore formation and stabilization. SAXS in-situ data were correlated to the morphological properties of the materials obtained from ex-situ samples by Rutherford back scattering and scanning electron microscopy.
Language eng
DOI 10.1038/s41598-018-33787-z
Field of Research 030207 Transition Metal Chemistry
091201 Ceramics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2018, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30114691

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.