ASTM G8 Cathodic Disbondment

Environmental Exposure

ASTM

Chemical, Liquid, Pipeline Coating, Plastics

A coating material is exposed to electrical stress in a highly conductive, alkaline electrolyte. Electrical stress is obtained by means of a sacrificial magnesium anode or from an impressed current. The coating is perforated before the test. After the specified time a physical examination is carried out to determine any  loss of adhesion.

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