Cathodic protection of a structure in the sea by sacrificial ano

Details Cathodic protection of a structure in the sea by sacrificial ano Cathodic protection of a structure in the sea by sacrificial ano

1977-09-12

1979-11-06

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

C23F 1300

Patent

active

041735234

ABSTRACT:
Apparatus and system for cathodic protection of a metal structure in the sea by sacrificial anodes. The apparatus has at least one anode of a first type for which the current flow is greater than 10 Amperes/meter.sup.2, with potentials on the order of -900 mV/ECS and has at least one anode of a second type for which the current flow is less than 6 Amperes/meter.sup.2, with potentials in the order of -900 mV/ECS, the absolute values of the decomposition potential under load of the anodes of the first and of the second type being greater (more negative) than the absolute value of the potential of the protected structure. Such a system can assure the protection of a metal structure in the sea for several dozen years.

REFERENCES:
patent: 2490978 (1949-12-01), Osterheld
patent: 2571062 (1951-10-01), Robinson et al.
patent: 3321306 (1967-05-01), Reding et al.
patent: 3537963 (1970-11-01), Schrieker
patent: 3953311 (1976-04-01), Wasson

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