Coating adhesion is the minimum force required to fully adhere a layer of corrosion protection fluid to a metal substrate. More durable and chemically resistant coatings have higher coating adhesion and therefore corrosion protection.
Typically depends on the following properties of the substrate and fluid interface:
atomic bond structure
stress and elasticity
Substrate Toughness
Impurity content
fluid thickness
Usually, these standards confer good adhesion to some extent. Improves adhesion by reducing internal stress, surface tension and removing surface impurities. ASTM D4541-17 - Standard Method for Pull-off Strength of Paint Using a Portable Adhesion Tester is an industry-recognized standard for evaluating the degree of paint adhesion that exists in a given application.
