Novel, One-Step, Chromate-Free Coatings Containing Anticorrosion Pigments for Metals That Can Be Used in a Variety of Industries
Abstract
The concept of superprimers, i.e., primers for metals with the conversion coating built in, has proven to be feasible. Such primers can be applied on any bare metal, provided it is reasonably clean. These primers are based on water-dispersed organic resins and organofunctional silanes, which assure good adhesion both to the substrate and the overcoat. In this paper we will discuss an epoxy-novolac based system for AA20242-T3, but we will also present an overview of other coatings. The corrosion protection performance of these coatings has been evaluated using electrochemical methods and performance tests. All of the developed coatings survive 2000 hrs in ASTM B117 salt spray test. The systems have also been extensively characterized. The characterization methods have provided information on the formation of the coatings and the mechanism by which the coatings protect the metal substrates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2007
- Accession Number
- ADA479061
Entities
People
- A. Ashirgade
- A. Seth
- C. Shivane
- P. Puomi
- S. Bafna
- W. J. Van Ooij
Organizations
- University of Cincinnati