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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Using a Sacrificial anode on a car to suppress or at least helpprevent rusting
On Tuesday, February 27, 2007 at 2:22:46 AM UTC-5, Brent wrote:
I have had a thought occur to me and i could use confirmation that I am or i'm not nuts. First off i live up in snow country and salt country, Ottawa Ontario Canada we put enough salt on our roads up here to make the ocean seem fit to drink. And well Ottawa has one of the most aggressive snow removal and salt plans going in in the first place. So heres my question. has anyone or is there any reason not to deliberately set up a galvanic cell by bolting an amount of magnesium or zinc to the car body in a place where the elements can hit it? IF i'm not "nucking futs" then the anode (Magnesium or zinc) getting wet touching bare steel will set up a galvanic cell with the Mg being sacrificed and "rusting/oxidizing" away to protect the steel of the cars bodywork. Am i nuts? is this doable? does anyone do this? Just curious? If it matters drive a unibody car with an aluminum block (diesel jetta) Not Nuts... My '02 sebring had magnesium strut cups that corroded and needed replacement in '14 and no rust . Replaced with aftermarket steel and rust started showing finally last winter after 16 years in new england. |
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