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 from PART66Online
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.
M
manin asked · 7 Jun 2013
isn't the corrosion more rapid when the anodic metal is smaller in compare to cathdic metal
Community Comments (2)
M
MridulDev
13 Jun 2013
yes indeed, the answer needs to be corrected.
Hey this might help for reference for those who are still confused:
anchorguard.com/reference_understand_...
Hey this might help for reference for those who are still confused:
anchorguard.com/reference_understand_...
P
PART66Online
13 Jun 2013
Ok, guys, question corrected, thanks.
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