Corrosion and Cathodic Protection Requirements in Offshore Arctic Waters

摘要

Specimens of mild steel with and without cathodic protection with Zn anodes have been exposed in arctic water at 15 and 158 m depths for periods of 23, 57 and 100 days. Hydrographic data were recorded throughout the period. There was a large consumption of anode material and few signs of polarization. Corrosion rates were about 350 and 250 micrometers/year over 100 days at 15 m and 158 m respectively. No biofouling was found on the panels.