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Status Report - Protective Coating Systems for Repaired Carbon Steel Surfaces - 18-Month Exposure

October 1992

By: Louis MacDowell

Abstract

Recent advances in protective coatings technology have developed materials that are intended for use over mechanically prepared surfaces. These materials promise satisfactory corrosion protection for the corroded carbon steel substrate with only cursory removal of loose, flaking rust to prevent premature adhesion loss. These products vary in composition from epoxies to polyurethanes to chemical conversion coatings. This study focused on techniques to rapidly screen many varied materials followed by conventional beachfront exposure testing of the successful candidate coatings. Data are presented on the performance characteristics of rust prevention of these coating systems and also gloss retention studies of the finish topcoats.

For additional information, a complete copy of this study is available as NASA Report 91-4835. Send requests for copies to corrosion@ksc.nasa.gov .

To download a full copy of this report in Adobe's pdf format for local printing, click 91-4835.pdf.  (2.4MB)

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