Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893857 | Corrosion Science | 2018 | 15 Pages |
Abstract
The corrosion behaviour of PPy-coated WE43 Mg alloy in a simulated body fluid solution with daily electrolyte renewal is investigated by electrochemical, hydrogen evolution and analytical techniques. It is shown that the PPy coating effectively contributes to a decrease in the corrosion rate of WE43 Mg alloy and production of H2 gas. An increase in the PPy coating protective properties observed after every electrolyte renewal is attributed to: 1) a decrease in the coating conductivity by the adsorption of CO2 species, and 2) substrate/coating decoupling due to uncompensated coating positive charging and misalignment of the substrate and coating Fermi levels.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Ascencio, M. Pekguleryuz, S. Omanovic,