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):

Report Date:

1970-12-07

Pagination or Media Count:

98.0

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 11 alizarinstrontium 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

Subject Categories:

  • Coatings, Colorants and Finishes
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE