ELECTROLYTIC TREATMENT OF SEA WATER FOR PROTECTION OF GALVANIZED PIPING

Authors
  1. Nikiforuk, T.P.
  2. Carson, J.A.H.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
An investigation was conducted into the effect of electrolytic water treatment on the corrosion of galvanized steel piping carrying natural sea water. Based on the data obtained in this 45 month investigation it is projected that treatment with an aluminum anode at an anode current to water flow rate ratio of 7.9 coulombs per litre will extend the life of a 125 micron thick galvanized coating from 8 to more than 80 months. It was concluded that the inhibitive effect resulted from the aluminum anode reaction products depositing on, or mixing with, the corrosion products of the galvanizing to form a more effective barrier to the diffusion of oxygen to the cathodic areas. The electrolytic treatment with aluminum anodes therefore reduces the corrosion of the galvanizing by cathodic inhibition.
Report Number
MATERIALS-80-B —
Date of publication
15 Jan 1980
Number of Pages
18
DSTKIM No
81-03910
CANDIS No
80210
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: