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Old 02-22-2012, 03:56 PM
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John_Bedini John_Bedini is offline
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Most metals are covered with a thin oxide

Quote:
Originally Posted by b_rads View Post
@Ibpointless:
I must respectfully disagree with your findings that oxygen is a bad thing. I am coming from from the experience of galvanic cells, so if you disagree with me, that is quite OK.
From the site:
Chem1 Electrochemistry: Electrochemical corrosion

Pitting corrosion
Most metals are covered with a thin oxide film which inhibits anodic dissolution. When corrosion does occur, it sometimes hollows out a narrow hole or pit in the metal. The bottoms of these pits tend to be deprived of oxygen, thus promoting further growth of the pit into the metal.
b rads,
That is why I disagree also. We could take this further as I have also seen impieties in the metal that generate little currents in the pits. as the impurities produce a type of acid gets stronger and stronger and then metal goes real fast. Thanks for posting that. The oxide really does not hurt anything as I have seen.
John B
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