Galvanic corrosion is most likely to be most rapid and severe when
- the surface area of the anodic metal is smaller than the surface area of the cathodic material.
- the surface area of the cathodic metal and the anodic material are approximately the same.
- the surface area of the cathodic metal is smaller than the surface area of the anodic material.
Explanation
Galvanic attack is most rapid and severe with an unfavourable area ratio: a small anode coupled to a large cathode concentrates the corrosion current into the small anodic area, so it corrodes quickly. Equal areas or a small cathode with a large anode spread the attack and make it far less aggressive.
manin asking:
isn't the corrosion more rapid when the anodic metal is smaller in compare to cathdic metal
Community Comments (2)
M
MridulDev Posts: 48 13.06.2013 / 06:41
yes indeed, the answer needs to be corrected.
Hey this might help for reference for those who are still confused:
http://www.anchorguard.com/reference_understand_what.cfm
Hey this might help for reference for those who are still confused:
http://www.anchorguard.com/reference_understand_what.cfm
D
dimky Posts: 514 13.06.2013 / 09:24
Ok, guys, question corrected, thanks.
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