How does E-Coating of metals work?

I've heard of using something called an E-coat to protect metals from corrosion as opposed to paint. How do they put an E-Coat on? Does it
stand for Electron Coat? Someone I know tried to explain it to me as though it were a voltaic battery. How does it operate without a salt bridge?
thanks!
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rikki wrote:

electrolytic coating?
Michael Dahms
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http://www.ppg.com/car_indcoat/electro5.htm
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