Journal
JOURNAL OF MATERIALS SCIENCE
Volume 42, Issue 13, Pages 4738-4744Publisher
SPRINGER
DOI: 10.1007/s10853-006-0769-1
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Deposition into nanoporous alumina membranes is widely used for nanowire fabrication. Herein using AC electrodeposition ternary Fe-Co-Ni nanowires are fabricated within the nanoscale-pores of alumina membranes. Using an electrodeposition frequency of 1,000 Hz, 15 V-rms, consistently and repeatably yield nanowire arrays over membranes several cm(2) in extent. Electrochemical Impedance Spectroscopy (EIS) is used to explain the effects of AC electrodeposition frequency. The impedance of the residual alumina barrier layer, separating the underlying aluminum metal and the nanoporous membrane, decreases drastically with electrodeposition frequency facilitating uniform pore-filling of samples several cm 2 in area. Anodic polarization studies on thin films having alloy compositions identical to the nanowires display excellent corrosion resistance properties.
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