Electron transfer kinetics and corrosion resistance of electrodeposited composit coating on titanium alloy

[Display omitted] •The preparation process of the electrodeposited composit (EDC) coating on Ti-6Al-4V alloys.•The EDC coating was stable in corrosive media and can decrease the electron transfer constant.•The activation energy of electron transfer reaction of EDC coating was larger than that of nat...

Full description

Saved in:
Bibliographic Details
Published in:Corrosion science 2020-11, Vol.176, p.108918, Article 108918
Main Authors: Peng, Wuxian, Luo, Hongyun, Tang, Jun
Format: Article
Language:English
Subjects:
Activation energy
Cathodic coating (process)
Coated electrodes
Corrosion resistance
Corrosion resistant alloys
EDC coating
Electron transfer
Electrons
Nanoparticles
Oxide coatings
Protective coatings
Reaction kinetics
Ti-6Al-4V alloys
Titanium alloys
Titanium base alloys
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •The preparation process of the electrodeposited composit (EDC) coating on Ti-6Al-4V alloys.•The EDC coating was stable in corrosive media and can decrease the electron transfer constant.•The activation energy of electron transfer reaction of EDC coating was larger than that of native oxide film. A electrodeposited composit (EDC) coating is fabricated on Ti-6Al-4V alloys via cathodic co-deposition. The surface of EDC coating is smooth with densely distributed nanoparticles. The EDC coating is stable in corrosive media because, combining the results of comprehensive coating characterizations and electron transfer theories, its activation energy of electron transfer reaction is higher than that of the native oxide film, contributing to the decreased electron transfer constant, which eventually restrains electrode reactions and results in an enormously improvement of corrosion resistance for Ti-6Al-4V alloys.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2020.108918