Synthesis of porous Cu from Al-Cu-Co decagonal quasicrystalline alloys

Authors
Vani, V. KalaiKwon, O. J.Hong, S. M.Fleury, E.
Issue Date
2011-03
Publisher
TAYLOR & FRANCIS LTD
Citation
PHILOSOPHICAL MAGAZINE, v.91, no.19-21, pp.2920 - 2928
Abstract
The formation of a porous Cu structure from cast Al-Cu-Co decagonal quasicrystalline alloys has been studied using a selective corrosion technique. Two alkaline solutions were selected based on the electrochemical properties of the constituent elements. Selective corrosion of Al and Co was achieved by chemical immersion of the cast Al-Cu-Co alloy in both 5 M NaOH and 0.5 M Na2CO3 solutions; values for BET surface-to-weight ratio of up to 30 m2/g could be reached. Microstructural analyses indicated that the architecture of the resulting porous structures was composed of a needle-type phase, remaining from the decagonal phase, in addition to Cu and Cu-Co phases.
Keywords
CATALYSTS; EVOLUTION; HYDROGEN; SYSTEM; quasicrystalline; Al-Cu-Co; corrosion; dealloying; porosity; catalyst
ISSN
1478-6435
URI
https://pubs.kist.re.kr/handle/201004/130571
DOI
10.1080/14786435.2010.518984
Appears in Collections:
KIST Article > 2011
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