C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
204/119, 204/187
C23F 13/00 (2006.01) C23F 13/02 (2006.01)
Patent
CA 1309971
ABSTRACT OF THE DISCLOSURE A corrosion protection system for steel or corrodible metal storage tanks, hollow vessels and the like uses two external electrodes which develop a voltage potential used to protect against internal and external 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.
545337
Duratron Systems Limited
Johnson Douglas S. Q.c.
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