Three-dimensional microstructure evolution and mechanical behavior of nanoporous Cu foams

Title
Three-dimensional microstructure evolution and mechanical behavior of nanoporous Cu foams
Authors
남승진황준연김흥규최현주
Keywords
3D microstructure; porous materials; nanoindentation; dealloying; powder metallurgy
Issue Date
2016-07
Publisher
Acta materialia
Citation
VOL 113, 170-179
Abstract
Nanoporous Cu foams having various pores and strut size were fabricated by chemical dealloying process with Al-Cu precursors. Microstructural evolution of three-dimensional configuration was investigated by electron microscopes aided focused ion beam (FIB) technique. The specific surface area and strength of the Cu foams increased with decreasing pore and strut sizes. The measured strength and specific surface areas were correlated with the Exner-Pohl model by modifying the parameters using the microstructural observation. The modified model demonstrated the mechanical behaviors of nanoporous Cu foams accounted for the strut size and the deformation-twinning model.
URI
http://pubs.kist.re.kr/handle/201004/59021
ISSN
13596454
Appears in Collections:
KIST Publication > Article
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