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Electrodeposition of AuCo alloys and multilayers

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Abstract

AuCo alloys and Au/Co multilayers have been fabricated by electrodeposition from non cyanide-containing electrolytes. The effect of pH and citric acid concentration on the deposit composition and current efficiency was investigated. Results showed that a lower citric acid concentration (0.47 m) at pH 6.15 was favored for multilayered Au/Co deposits with disparate compositions in each layer. An increase in the citric acid concentration or pH requires a larger applied current density to achieve the same cobalt concentration, and results in a drop of current efficiency.

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Acknowledgements

The authors gratefully acknowledge NSF for support of this work under Grant NIRT- NSF (#CTS-0210832) and the Louisiana State University Center for Biomodular Multi-Scale Systems. Also X. Xie and C. Henk are warmly acknowledged for their help in SEM and TEM analyses.

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Authors and Affiliations

  1. Mary A. and Gordon Cain Department of Chemical Engineering, Louisiana State University, South Stadium Road, Baton Rouge, LA, 70803, USA

    M. Guan & E.J. Podlaha

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  1. M. Guan
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  2. E.J. Podlaha
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Correspondence to E.J. Podlaha.

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Guan, M., Podlaha, E. Electrodeposition of AuCo alloys and multilayers. J Appl Electrochem 37, 549–555 (2007). https://doi.org/10.1007/s10800-006-9235-7

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  • DOI: https://doi.org/10.1007/s10800-006-9235-7

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