The effects of substrate material on the micro structure of pulse-plated Zn-Ni alloys

A. M. Alfantazi, G. Brehaut, U. Erb

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The effect of substrate material on the microstructure (surface morphology, phases present and preferred orientation) and chemical composition of Zn-Ni alloy electrodeposits, produced from a chloride-based electrolyte using the square-wave pulse-plating technique, has been investigated. Steel and commercial-purity, cold-rolled copper substrates were considered. The results indicated that changing from a steel to copper substrate does not have a significant influence on the deposit characteristics, except for the variations in the chemical composition. These variations were attributed to a number of factors including; (1) the different initial electrode potential (open circuit potential); (2) differences in cell voltages due to different electrical resistivity of the two metals; and (3) possibly to surface energy considerations. Because of the similar microstructure obtained, these coatings should have similar properties.

Original languageBritish English
Pages (from-to)239-244
Number of pages6
JournalSurface and Coatings Technology
Volume89
Issue number3
DOIs
StatePublished - 1 Mar 1997

Keywords

  • Coatings
  • Pulse-plating
  • Substrate
  • Zn-Ni alloys

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