Effect of ethylenediamine on the electrodeposition of Ni-Fe alloys

Journal Article · Thu Apr 01 04:00:00 EST 1999 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1391786· OSTI ID:345329

Harris, T M; Wilson, J L; Bleakley, M ^[1]

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1. Univ. of Tulsa, OK (United States). Dept. of Chemistry

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.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 345329
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 146; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMINES
CATALYTIC EFFECTS
CHLORIDES
ELECTRODEPOSITION
IRON ALLOYS
NICKEL ALLOYS