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Electroplating of cadmium from acidic bromide baths

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Abstract

Earlier work on the electroplating of cadmium from acidic bromide solution containing 0.3M CdBr2·4H2O, 0.1M HC1, 0.4M H3BO3 and 2.0M KBr (Bath I) has been reviewed and extended to an examination of the influence of the organic additives 5g gelatin 1−1 and 2.5g melamine 1−1 (Bath II). The effects of the plating current density, plating time and pH on the cathodic polarization and the current efficiency of cadmium electroplating from Bath II, as well as on the morphology and the microhardness of the as-plated cadmium electrodeposits are discussed. It was observed that the additivecontaining Bath II yields more coherent, brighter and harder cadmium plates than the additive-free Bath I. The optimum operating conditions for obtaining satisfactory plates from Bath II at 25° C are:i=0.6–1.6 A dm−2;t=10–15 min and pH 3.6–1.9.

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Author notes

  1. A. M. Abd El-Halim

    Present address: Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt

Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia

    A. M. Abd El-Halim

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  1. A. M. Abd El-Halim
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Abd El-Halim, A.M. Electroplating of cadmium from acidic bromide baths. J Appl Electrochem 14, 587–594 (1984). https://doi.org/10.1007/BF00626302

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  • DOI: https://doi.org/10.1007/BF00626302

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