Electrochemical Behavior of Electrodeposited Ni-P Coatings in Acidic Solutions
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Date
2012
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Sumy State University
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Abstract
The paper is devoted to the investigation of cathodic and anodic behavior of electrodeposited Ni-P alloys
of different composition in H2SO4 solutions. It was established that increase of phosphorous content
enhances anticorrosion ability of Ni-P coatings and decreases their catalytic activity toward to hydrogen
evolution reaction. The most probable mechanism of this reaction was suggested on the basis of analysis of
experimental data. It assumes that at low overpotentials hydrogen evolution proceeds by Volmer-
Heyrovsky route with limiting step of charge transfer. At higher potentials Volmer-Tafel mechanism with
slow chemical recombination step takes place.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35466
Keywords
Ni-P Coatings, Anticorrosion Ability, Catalytic Activity, Hydrogen Evolution Reaction, Mechanism
Citation
Dolgikh, O. V.
Electrochemical Behavior of Electrodeposited Ni-P Coatings in Acidic Solutions / O. V. Dolgikh, N. V. Sotskaya, L. V. Sapronova
// Nanomaterials: Applications & Properties (NAP-2012) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2012. - V. 1, No4. - 04FCNF04