Accession Number : AD0824226

Title :   ZINC INORGANIC SILICATE COATINGS, WITH AND WITHOUT TOPCOATS, EXPOSED TO A MARINE ATMOSPHERE.

Descriptive Note : Technical rept. Oct 64-Oct 66,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s) : Brouillette, Carl V.

Report Date : DEC 1967

Pagination or Media Count : 71

Abstract : Ten zinc inorganic coatings, with and without topcoats, were applied to sandblasted steel and exposed to a marine atmosphere in Port Hueneme, California, Kaneohe, Hawaii, and Kwajalein, Marshall Islands. The necessity of using a wash primer over the zinc inorganic coatings when applying certain MIL-SPEC topcoatings was demonstrated. During 2 years of exposure, one proprietary epoxy topcoat nearly failed along a scribed cut; however, in general, all three proprietary vinyl and four of five proprietary epoxy topcoats gave excellent protection. Two of the vinyl topcoats have blistered slightly, which may result in loss of bond. The testing is continuing, and additional reports on the performance of these coatings will be forthcoming. (Author)

Descriptors :   (*STEEL, PROTECTIVE TREATMENTS), ZINC COATINGS, ENVIRONMENTAL TESTS, SALT SPRAY TESTS, TROPICAL TESTS, PLASTIC COATINGS, PAINT PRIMERS, EPOXY RESINS, SILICATES, VINYL PLASTICS, POLYESTER PLASTICS, CORROSION INHIBITION, CORROSION RESISTANCE, COATINGS, ZINC COMPOUNDS, HAWAII, CALIFORNIA, KWAJALEIN ATOLL, MARSHALL ISLANDS.

Subject Categories : Coatings, Colorants and Finishes
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE