4 ms·
this is an interesting question. Electrical current creates an EM field that could repel water molecules and oxygen ions. Temperature could also slow oxidatio
by jugg1es 3y ago
this is an interesting question. Electrical current creates an EM field that could repel water molecules and oxygen ions. Temperature could also slow oxidation down... like I'm trying to imagine a red hot piece of iron rusting. I wouldn't think it would rust as fast as a cold piece of iron.
- ethbr0 3y agoHigh temperature speeds oxidation. Learned as a consequence of blacksmithing. ;) So red hot iron absolutely rusts, you just beat the (brittle) oxidation off as you work the piece.
- jugg1es 3y agolearned something today - thanks!
- zmgsabst 3y agoAnodizing (controlled oxidation) is done via water with a current through the piece to anodize. https://www.youtube.com/watch?v=gIwvLuNzliI https://www.youtube.com/watch?v=gIwvLuNzliI I’d think that charge would create a faster rusting.
- HeyLaughingBoy 3y ago> Temperature could also slow oxidation down Gonna have to guess that you've never had to replace a car exhaust :-)
- mauvehaus 3y agoCar exhaust is a weird case though. The water vapor in the exhaust condenses on the cold metal. If you drive far enough, you add enough heat to evaporate the water back out. Else, you end up with a bunch of water in the exhaust facilitating the rusting. In general, you have this problem with cold metal when there's enough humidity to cause condensation. Bare cast iron in an unconditioned space under cover will definitely rust from condensation.