Accelerated corrosion tests are commonly used across the coatings industry to predict performance of coating systems and aid development of new coating systems for a variety of exposure environments. Variability in the results exist in almost all accelerated testing. To improve efficiency in coatings development and to gain better confidence in test results, it is important to understand the root cause of variability. This work investigates the effect that different scribe requirements (such as dimension or orientation) have on the outcome and comparability of accelerated corrosion test results. Discussion will focus on coating application and sample preparation prior to accelerated corrosion test exposure, as well as evaluation of scribe corrosion after various preparation protocols.

Subject
Accelerated corrosion tests, Test methods, Coating performance, Coatings, Materials performance, Tools, Polyurethanes, Variability, Polyurethane coatings, Salt spray corrosion testing, Rust, Creep, Coating systems
Keywords:
Accelerated testing, corrosion, scribe
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2022
Association for Materials Protection and Performance (AMPP)
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