Characteristics of the Galvanic Baths for Electrodeposition of Nickel Coatings Using the Hull Cell

Abstract:

Electrodeposition of polycrystalline nickel onto carbon steel substrate has been studied from different types of solutions: (bath I) the Watts nickel plating bath, (bath II) the sulfate-chloride nickel plating bath for production of the SUPER Ni coatings, (bath III) the sulfamate nickel plating bath, and (bath IV) the chloride nickel plating bath. A detailed study has been made on the influence of the bath composition on the mass increment and thickness of the deposited Ni coatings. Cathodic current efficiency of the Ni electrodeposition has been also studied. The electrochemical anodic de-plating technique has been used for measuring the thickness of nickel coatings according to ISO 2177:2003. Evaluation of the effect of bath composition on the quality of the galvanic nickel coatings, was carried out using the Hull cell. In a single test, the range of current densities which provided a desired plating characteristic at a given total current, was previewed. Principles of the electroplating process using the Hull cell have also been explained.

• Periodical: Solid State Phenomena (Volume 228)
• Pages: 79-88
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.228.79
• Online since: March 2015
• Authors: Magdalena Szklarska*, Agnieszka Smołka, Magdalena Popczyk, Bożena Łosiewicz
• Keywords: Current Distribution, Electrodeposition, Galvanic Baths, Hull Cell, Ni Electrocoatings

References

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[7] ISO 2177: 2003: Metallic Coatings - Measurement of Coating Thickness - Coulometric Method by Anodic Dissolution.

DOI: 10.3403/30098668

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