Effect of SiO2 Colloid on the Electrodeposition of Zinc‐Iron Group Metal Alloy Composites
- 1 April 1994
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 141 (4) , 954-957
- https://doi.org/10.1149/1.2054864
Abstract
The mechanism of codeposition in Zn‐based composite platings has yet to be clarified in detail. In this study, electro‐deposition of Zn‐Fe group composite was performed from the electrolytes containing Zn, Fe group metal cations, and colloid. An induced codeposition was found between Fe group metal and colloid. This result is explained from the adsorption of Fe group metal ions on colloid and the agglomeration of colloid on the cathode. Extending this knowledge to the system composites contain Cr and contents of up to 18 and 10 weight percent, respectively, have been obtained for the first time. In this system, catalyzed the Cr codeposition. These composites showed excellent corrosion resistance.Keywords
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