MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
 
Development of Nanoporous Copper Foams by Chemical Dealloying of Mechanically Alloyed Al–Cu Compounds
Seungjin NamHyungyung JoHeeman ChoeDonghwan AhnHyunjoo Choi
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2014 Volume 55 Issue 9 Pages 1414-1418

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Abstract

We developed open-cell copper foams with uniformly distributed nanopores by chemical dealloying of Al2Cu samples that were synthesized by a powder process. High-energy ball-milling was utilized for mechanical alloying of aluminum and copper powders and either hot rolling or hot pressing was then employed to consolidate the ball-milled powders into sheets or pellets. Subsequent dealloying aluminum from the samples produced nanoporous copper foams. X-ray diffractometry and scanning electron microscopy confirmed the uniform formation of Al2Cu and aluminum phases prior to dealloying, and the introduction of nanoporous structures after dealloying.

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© 2014 The Japan Institute of Metals and Materials
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