A Trial on Cathodic Protection of Sea-Water Tank. (III)
On the Electrocoating by the Combination of Amalgamated Aluminum and High-Purity Zinc Anodes
1957 Volume 6 Issue 4 Pages 210-214
Details
1957 Volume 6 Issue 4 Pages 210-214
The 3rd series of experiment was carried out on the electrocoating of a steel tank containing about 100 tons of sea-water. This time, the inner surface fairly rusted was electrocoated with boosting anodes made of Al (99.8%) rods superficially amalgamated. An electricity of 62A·hr was passed on the 1sq·meter of protected area for 72hrs. The coatings obtained were examined and the potential distribution was determined under the protection with high-purity zinc anodes.
Then the coated surface was electrocoated again with a current of 91A·hr per sq·meter for 142hrs. by means of amalgamated Al. The coatings were considerably improved by the additional coating process.
The amalgamated Al produced an anodic current of 5mA/cm2 and amounted to 1.5-2.0 A·hr per gram of weight loss.
