Sacrificial cathodic protection system

Details Sacrificial cathodic protection system Sacrificial cathodic protection system

1980-12-17

1983-05-03

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204148, C23F 1300

Patent

active

043819818

ABSTRACT:
Corrosion protection is provided to a metallic structure by a sacrificial anode system. A current control element is used to achieve fast and adequate corrosion protection under changing conditions, while excess current flow is minimized to extend anode life and avoid overprotection. The basic advantages of sacrificial anode systems such as simplicity and autonomy are retained. The system employs a field effect or a MOS (metal oxide silicon) semiconductor device to act as the current control element.

REFERENCES:
patent: 3313958 (1967-04-01), Bowers
patent: 3330751 (1967-07-01), Warner
patent: 3360452 (1967-12-01), McNulty
patent: 3362900 (1968-01-01), Sabins
patent: 3374162 (1968-03-01), Rubelmann
patent: 3451311 (1969-10-01), Hospord
patent: 4224539 (1980-09-01), Musa et al.

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