Analysis of Coating Blister Failures and Associated Coating and Substrate Risks

From JPCL, April 2020

By Michael Kibler and Patrick Cassidy, Elzly Technology Corp.; and and Jay Ong, Naval Surface Warfare Center, Carderock

For years, the causes and mechanisms of blistering have been studied to determine its effects on coating performance and underlying substrates. The authors present results of a recent U.S. Navy study in which it was determined that the substrate below a blister may be more prone to pitting in certain exposures, suggesting a need for a better understanding of how to evaluate blistered coatings when considering repairs....