Effect of Soluble Salt Contamination of Steel Substrates on the Performance of Coatings

摘要

Coatings performance can be seriously affected by the presence of soluble salts on the steel substrate that they are applied to. Coatings applied to steel surfaces that are contaminated with soluble salts would be expected to show a lower level of performance than the same coating applied to uncontaminated steel, with a high likelihood of sub-film corrosion and osmotic blistering occurring. This paper details a work program that has been carried out to attempt to rank a number of products which are usually used in immersion conditions with respect to how tolerant they are to soluble salt contamination and a comparison of their level of performance when they have been applied to soluble salt contaminated steel.