Non-Electrical Measurement Techniques for Assessing the State of Coating Systems Deterioration

摘要

Nonelectrical methods used to characterize early degradation in coating systems were reviewed and critiqued with respect to their ability to provide predictive in-service performance data. The methods reviewed were classified into those that measure chemical changes, coating/substrate interfacial changes, and adhesion and mechanical properties. Although many methods are used to characterize coating system degradation, very limited research has been done to relate early property changes to in-service performance. It was concluded that because of the complexity of the degradation of coating systems, a combination of methods will be needed to characterize early degradation to the extent that service-life prediction of coating systems can be based on these measurements.