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A new condensation product for zinc plating from non-cyanide alkaline bath

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Abstract

Zinc electroplating from non-cyanide alkaline solution is carried out in the presence of condensation product formed between DL-alanine (DLA) and glutaraldehyde. The bath constituents and bath variables are optimized through standard Hull cell experiments. The current efficiency and the throwing power are measured. High shift of potential towards more cathodic direction was observed in presence of addition agents. Corrosion resistance test reveals good protection of base metal by zinc coating obtained from the developed electrolyte. SEM photomicrographs show fine-grained deposit in the presence of condensation product. IR spectrum of the scraped deposit shows the inclusion of the condensation product in the deposit during plating. The consumption of brightener in the lab-scale is 6 mLL-1 for 1000 amp-hour.

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Authors and Affiliations

  1. Department of Studies in Chemistry, Kuvempu University, 577 451, Shankaraghatta, India

    Y. Arthoba Naik & T. V. Venkatesha

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  1. Y. Arthoba Naik
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  2. T. V. Venkatesha
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Correspondence to T. V. Venkatesha.

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Naik, Y.A., Venkatesha, T.V. A new condensation product for zinc plating from non-cyanide alkaline bath. Bull Mater Sci 28, 495–501 (2005). https://doi.org/10.1007/BF02711243

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