Painting over soluble salts: Field extraction of soluble salts from corrosion products of steel

This paper assesses the extraction efficiency of a new field extraction method that allows the nature and the concentration of soluble salts present on the steel surface to be known with greater precision. The results of a comparative study with other commercial extraction cells, performed on rusted steel surfaces obtained both by natural exposure in the atmosphere and artificially in climate cabinets, show that the new extraction method positively affect the soluble salt extraction efficiency.