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NON-TOXIC CORROSION-PROTECTION CONVERSION COATS BASED

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

NON-TOXIC CORROSION-PROTECTION CONVERSION COATS BASED
ON RARE EARTH ELEMENTS
Patent No. U.S. 7,407,711 B2
University of Dayton, Dayton, Ohio has received a patent for solid corrosion-inhibiting conversion coating formed on a substrate metal, the conversion coating is comprised of a rare earth element and an inorganic valence stabilizer combined to form a rare earth/valence stabilizer complex within the solid corrosion-inhibiting conversion coating, wherein the rare earth element is selected from cerium, praseodymium, terbium, or a combination thereof, and at least one rare earth element is in the tetravalent oxidation state in the rare earth/valence stabilizer complex in the solid corrosion-inhibiting conversion coating.

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