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SILANE-BASED CONVERSION COATING FOR METALS
Citation:
Randall*, P M. AND W. J. van Ooij. SILANE-BASED CONVERSION COATING FOR METALS. Lake Buena Vista, FL, 1/26-28/98.
Description:
For the past three years, a project to develop new pretreatment rinses for metals was carried out by the U.S. Environmental Protection Agency and the University of Cincinnati. The project involved optimization of laboratory rinses with dilute aqueous solutions organofunctional silanes. Metals included: cold-rolled steel, electrogalvanized steel, hot-dip galvanized steel, aluminum and its alloys, and Galvalume?. Metals were painted with polyester or polyester or polyurethane powder paints systems after silane treatment. It was shown that if properly selected and applied, the silane treatments can outperform the currently used chromating and phosphating systems for these metals. This performance is reported for the salt spray test (ASTM B-117) and for the GM 9540P accelerated cyclic corrosion test (GM scab). This presentation will report on the corrosion performance and other results of the silane-treated metals.