Corrosion Inhibition by Electrodeposited Conductive-Polymer Film.
Abstract
Conductive polymer coatings were deposited on steel and titanium substrates by electrooxidative polymerization of poly(3-methylthiophene). The properties of the polymer coatings in acidic, basic and chloride containing solutions were evaluated by electroanalytical means, and the effectiveness of the coatings in providing anodic protection of the substrate were evaluated. The polymer contains a reversible couple with an equilibrium potential near 0.4V positive of Ag/AgCl sat'd KCl. It is effective in passivating 430 stainless steel and titanium in sulfuric acid solution at temperatures below 50 deg C. Excursions of potential negative of -0.3V result in irreversible reduction of the polymer to a nonconductive state. The polymer is also rendered permanently inactive by basic solutions and by chloride. Corrosion, Conductive polymers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 1993
- Accession Number
- ADA275456
Entities
People
- Dale P. Barkey
Organizations
- University of New Hampshire