Journal
MATERIALS LETTERS
Volume 92, Issue -, Pages 448-451Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.10.090
Keywords
Porous materials; Solidification; Gasar; Dealloying; Bimodal
Funding
- Research Foundation of Tsinghua University [2010 TH Z01]
Ask authors/readers for more resources
A combination of the Gasar and dealloying processes for fabricating a bimodal micro/nanoporous metal was proposed. Lotus-type, porous Cu-34.6 wt% Mn alloy was prepared by metal-gas eutectic unidirectional solidification, i.e., the Gasar process. This Gasar Cu-Mn alloy was then subjected to dealloying treatment, and nanoporous Cu was prepared at various current levels and durations. Two different dealloyed porous structures, namely haystack and sponge-like form, were obtained at low (<= 100 mA) and high (>= 1 A) current levels, respectively. The distinct morphology can be attributed to the changes in the reaction rate and surface diffusion coefficient (D-S). Thus dealloying current determines the pore morphology. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available