ZINC-RICH COATINGS: CHARACTERISTICS, APPLICATIONS, AND PERFORMANCE

CHARACTERISTICS, ECONOMICS, AND PROCUREMENT OF ZINC-RICH COATINGS ARE DISCUSSED. THE ZINC-CHROMATE IS VERY IMPORTANT IN PREVENTING PIN-POINT RUSTING AND MILL SCALE LIFTING IN STEEL. BECAUSE OF ITS SOLUBILITY, ZINC-CHROMATE IS VERY EFFECTIVE, BUT USUALLY MUST BE INCORPORATED HAVING SOME ALKYD OR PHENOLIC RESIN. THE ZINC DUST-ZINC PAINTS ARE WIDELY USED IN WATER IMMERSION. ZINC COATINGS PROVIDE CATHODIC PROTECTION FOR STEEL SURFACES BECAUSE ZINC IS LESS MOBILE THAN STEEL ON THE ELECTRO-MOTIVE SERIES. REQUIREMENTS OF A PROPER ZINC-RICH PAINT FORMULATION INCLUDE FREEDOM FROM HYDROGEN EVOLUTION IN THE CAN, DENSE SETTLEMENT IN THE PIGMENT, AND BLISTERING IN SEA WATER. THE STEEL STRUCTURES PAINTING COUNCIL MANUAL OFFERS GUIDANCE IN THE SELECTION AND USE OF THE ZINC-CONTAINING PAINTS. ZINC IS ONE OF THE MOST USEFUL MATERIALS FOR PROTECTIVE COATINGS ON STEEL.

• Supplemental Notes:
  • Vol 8, No 3, PP 31-35, 1 TAB, 5 PHOT, 27 REF
• Authors:
  • Keane, J D
• Publication Date: 1969-3

Media Info

• Serial:
  • Materials Protection
  • Publisher: National Association of Corrosion Engineers

Subject/Index Terms

• TRT Terms: Alkyd resins; Cathodic protection; Chromates; Coatings; Manuals; Paint; Phenolic resins; Protective coatings; Steel; Steel structures; Zinc; Zinc alloys
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216805
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 21 1994 12:00AM