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Galvanic formation of Zn-Ni/Zn-Co type multilayer alloy coatings on steel substrate

  • Silesian University of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Zn-Ni and Zn-Co monolayer and Zn-Ni/Zn-Co multilayer (from 2 to 128 layers) alloy coatings were formed on steel substrate by electrodeposition from acidic Zn-Ni bath and neutral Zn- Co bath. Samples were tested in a salt chamber by neutral salt spray (NSS) method. Open-circuit potential measurements and gravimetric studies were carried out in a 5% NaCl solution. It was found that the coatings with Zn-Ni surface layer have higher corrosion resistance than the coatings with Zn-Co surface layer. The sixteen-layer coatings with Zn-Ni surface layer proved to be the most effective in protecting the steel substrate. The Zn-Ni monolayer coatings showed the lowest corrosion potential, which affects the corrosion properties of multilayer coatings. Sample weight changes during exposure to corrosive environment are related to dissolution of the coating and the formation of corrosion products.

Original languageEnglish
Title of host publicationCorrosion and Surface Engineering
EditorsJoanna Michalska, Maciej Sowa
PublisherTrans Tech Publications Ltd.
Pages147-150
Number of pages4
ISBN (Electronic)9783038353911
DOIs
Publication statusPublished - 2015
EventInternational Scientific Conference Corrosion, 2014 - Gliwice, Poland
Duration: 18 Nov 2014 → 21 Nov 2014

Publication series

NameSolid State Phenomena
Volume227
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Conference

ConferenceInternational Scientific Conference Corrosion, 2014
Country/TerritoryPoland
CityGliwice
Period18/11/14 → 21/11/14

Keywords

  • Corrosion
  • Multilayer alloy coatings
  • NSS method
  • Zn-Co coating
  • Zn-Ni coating

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics

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