Development of Improved Inhibitive Primers.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 07, 1970
- Accession Number
- AD0720384
Entities
People
- K. S. Rajan
Organizations
- IIT Research Institute