Accession Number : AD0720384

Title :   Development of Improved Inhibitive Primers.

Descriptive Note : Final technical rept. 1 Oct 69-31 Oct 70,

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : Rajan,K. S.

Report Date : 07 DEC 1970

Pagination or Media Count : 98

Abstract : The application of a number of different organic compounds as corrosion inhibitors was investigated in primers for aluminum and titanium alloys exposed to marine atmospheres. The candidate compounds belong to the classes of hydroxy-anthraquinones, lake-forming diazo compounds, phthaleins, triphenyl-methanes and phthalocyanines. 1-hydroxyanthraquinone, Na-phthalocyanine, pyrocatechol violet and orange II (azo dye) compared favorably with alizarin for aluminum. Further, these studies opened up the possibilities of a wide range of organic compounds for corrosion inhibition investigations. The bleed-through behaviour of alizarin through epoxy topcoat was observed to be obviated by using 1:1 alizarin:strontium chromate. Na-phthalocyanin and pyrocatechol violet-based primers did not show this bleed-through behavior. Results of the investigations on stress corrosion of titanium Ti-6A1-4V alloy did not prove conclusive. (Author)

Descriptors :   (*CORROSION INHIBITION, *DYES), (*PAINT PRIMERS, CORROSION INHIBITION), (*PHTHALOCYANINES, CORROSION INHIBITION), TITANIUM ALLOYS, ALUMINUM ALLOYS, ADDITIVES, AROMATIC COMPOUNDS, KETONES, PHENOLS, EPOXY RESINS, PLASTIC PAINTS, SULFONATES, ORGANIC NITROGEN COMPOUNDS, ANTHRACENES, ORGANIC SULFUR COMPOUNDS

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE