Abstract
Galvanic corrosion of carbon steel (CS) coupled to three different alloys, SS316, SS321 and SS2205, was studied by electrochemical techniques in stagnant condition and 3.5% Sodium chloride solution at room temperature (25oC). The electrochemical work included the measurements of galvanic potential as a function of time and Evans (polarization) diagrams of coupled metals as well as weight loss technique. SEM images were taken to test the metal surface. Results indicated that CS suffered galvanic corrosion when coupled to all the selected alloys with different rates. Mainly it can be described as general corrosion but with SS321 it was clearly pitting corrosion. The best alloy to be used with the CS in stagnant 3.5% Sodium chloride solution at room temperature is SS2205 since the galvanic couple has the lowest corrosion rate(CR), indicating that CS corrodes at a lower rate when it is coupled to SS2205 then SS316 then SS321 in this environment.
For more details:
http://sciaeon.org/articles/A-Study-of-Galvanic-Corrosion-in-Sodium-Chloride-Solution.pdf
Submit your manuscript:
http://sciaeon.org/submit-paper A Study of Galvanic Corrosion in Sodium Chloride Solution
Contact us: geology@sciaeonopenaccess.com
Journal of Geology and Geoscience 