Cathodic protection system

Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating

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204148, C23F 1300

Patent

active

039533115

ABSTRACT:
A cathodically protected internal joint between two tubular members coupled together and which are provided as part of a fluid conducting system. One of the tubular members tends to be anodic to the other tubular member. In order to prevent corrosion dissipation of the more anodic tubular member, material more anodic than the tubular members is provided internally of the joint to provide cathodic protection to the fluid exposed inner surface of the tubular members at the joint area by release of electrons outwardly of the anodic material.

REFERENCES:
patent: 1646736 (1927-10-01), Mills
patent: 1705197 (1929-03-01), Mills
patent: 3542663 (1970-11-01), Alewitz
Moore, "Corrosion", Vol. 9, pp. 112-114.
Farr, "Corrosion", Vol. 9, pp. 108-111.

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