Internal corrosion protection of metal tanks

Details Internal corrosion protection of metal tanks Internal corrosion protection of metal tanks

1988-08-25

1990-01-02

Chambers, A. Michael

Receptacles

Outlet or junction box type

Sectional receptacle

204148, 204197, B65D 600, C23F 1300

Patent

active

048907553

ABSTRACT:
A corrosion protection system for steel or corrodible metal storage tanks and the like uses two external electrodes which develop a voltage potential used to protect against internal corrosion. One of the external electrodes is connected to an internal sacrificial electrode which is selected such that the rate of corrosion is small and the resulting contamination in the tank is acceptable. The preferred internal electrode is made of a ferro alloy and is connected to the external electrode which has a potential similar to graphite or at least of the same polarity relative to steel. The other electrode is a sacrificial electrode preferrably of zinc or magnesium.

REFERENCES:
patent: 1512557 (1924-10-01), Mills
patent: 2541062 (1951-02-01), Hoxeng
patent: 3186931 (1965-06-01), Marsh et al.
patent: 3226314 (1965-12-01), Wellington et al.
patent: 3562124 (1971-02-01), Leon et al.
patent: 4511444 (1985-04-01), Dukat

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