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Title: Synthesis, microstructure, and mechanical properties of polycrystalline Cu nano-foam
Abstract A polycrystalline Cu foam with sub-micron ligament sizes was formed by creating a non-woven fabric via electrospinning with a homogeneous mixture of polyvinyl alcohol(PVA)-and copper acetate(Cu(Ac) 2 ). Thermogravimetric measurement of the electrospun fabric of the precursor solution is reported. Oxidizing the precursor fabric at 773K formed an oxide nano-foam; subsequent heating at 573K with a reducing gas transformed the CuO nano-foam to Cu with a similar ligament and meso-scale pore size morphology. A cross-section prepared by focused ion beam lift-out shows the polycrystalline structure with multi-scale porosity. The mechanical property of the Cu nano-foam is measured by nano-indentation. The load-depth curves and deduced mechanical properties suggest that additional intra-ligament pores lead to unique structure-property relations in this non-conventional form of metal.  more » « less
Award ID(s):
1634640 1634772
PAR ID:
10075205
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
MRS Advances
Volume:
3
Issue:
8-9
ISSN:
2059-8521
Page Range / eLocation ID:
469 to 475
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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