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Author Harris, T. M. ♦ Wilson, J. L. ♦ Bleakley, M.
Sponsorship USDOE, Washington, DC (United States)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ NICKEL ALLOYS ♦ IRON ALLOYS ♦ ELECTRODEPOSITION ♦ AMINES ♦ CATALYTIC EFFECTS ♦ CHLORIDES
Abstract Ethylenediamine (EDA) greatly affects the phenomenon of anomalous codeposition observed in the nickel-iron electrodeposition system. EDA increases the Ni/Fe ratio of the deposit when the bath is chloride based and the pH is at least 5. Ion microprobe analysis indicates that EDA is incorporated in the deposit. It is hypothesized that EDA adsorbs on the deposit surface and serves as a bridge for Ni{sup 2+} deposition in preference to that for Fe{sup 2+}, which forms less stable complexes with EDA. Chloride ion in the bath is necessary for the adsorption of EDA, and thus the relative increase in the nickel deposition rate.
ISSN 00134651
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-04-01
Publisher Place United States
Journal Journal of the Electrochemical Society
Volume Number 146
Issue Number 4


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