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    Detrimental Materials at the Steel/Paint Interface

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    Materials harmful to paint life can remain on the surface of steel not only after hand cleaning but also after the more thorough white metal blast cleaning. Harmful materials that can interfere with protection by paint include grease and oil, moisture, iron oxides, and chemical contaminants. Chemical contaminants come from acid rain, snow removal salts, seawater, nearby chemical plants, or contaminated blasting abrasives.

    These materials are discussed with emphasis on significant and novel concepts and with respect to occurrence, identification, removal, and the role of the material in causing corrosion. Experimental evidence and handbook data are used to support conclusions.


    cell, chlorides, concentration, conductivity, contamination, corrosion, electrolyte, grease, inorganic salts, interface, ions, mill scale, osmosis, osmotic pressure, paints, primer (coatings), scale (corrosion), steel surface, sulfates, vapor pressure

    Author Information:

    Johnson, WC
    Staff, KTA-TATOR Inc., Pittsburgh, PA

    Committee/Subcommittee: D01.21

    DOI: 10.1520/STP29524S