Corrosion protection employing alternating voltage

Details Corrosion protection employing alternating voltage Corrosion protection employing alternating voltage

C - Chemistry, Metallurgy

23

F

C23F 13/00 (2006.01)

Patent

CA 2176161

A method of protecting metals from corrosion by applying an alternating voltage to them, thereby reversing the metal's polarity with respect to its surroundings. Particular applications are for metals which are buried in soil or are exposed to an electrolyte. Amphoteric metals which are subject to cathodic corrosion are protected. Steels, which are subject to hydrogen embrittlement when made cathodic, are also protected by polarity reversal.

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