Corrosion protection employing alternating voltage

Details Corrosion protection employing alternating voltage Corrosion protection employing alternating voltage

1995-06-08

1998-05-12

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

204196, 205724, 205736, 422 1, 422 40, C23F 1100

Patent

active

057500711

ABSTRACT:
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 Steels, which are subject to hydrogen embrittlement when made cathodic, are also protected by polarity reversal.

REFERENCES:
patent: 3655905 (1972-04-01), Ray
patent: 4869016 (1989-09-01), Diprose et al.
patent: 5172007 (1992-12-01), Lumetta et al.
patent: 5346598 (1994-09-01), Riffe et al.
patent: 5352342 (1994-10-01), Riffe

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