期刊
ADVANCED ENGINEERING MATERIALS
卷 22, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.202000381
关键词
composite materials; liquid metal dealloying; mechanical properties; metallic foam; nanoindentation
资金
- Region Rhone-Alpes [CMIRA 138249]
- Erasmus+ program (European Union)
- French ministry of research
Liquid metal dealloying (LMD) is a new technology to create porous materials. From a (FeCr)(x)-Ni(1-x)precursor, it is possible to get a bicontinuous structure of FeCr and Mg: a metal-metal composite. An etching step removes the Mg solid-state solution phase to give a metal-air composite. The last step, polymer infiltration, gives metal-polymer composites. Herein, metal-metal, metal-air, and metal-polymer (rubbery or glassy polymers) with three different phase ratios are elaborated by LMD from Ni-based precursors and their mechanical properties are analyzed. A full polymer infiltration into the pores is obtained and the epoxy polymer properties are not affected by the metallic foam presence. Concerning control of the mechanical properties, the material's second-phase selection is a key factor. Herein, it is shown that the mechanical properties are easily designed by optimizing phase ratio, ligament size, and second-phase type and that these materials are promising materials for biomedical applications.
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