Metallic coatings. Porosity tests. Ferroxyl test Ingestion-build-109673 This document specifies the standard

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Metallic coatings. Porosity tests. Ferroxyl test Ingestion-build-109673 This document specifies the standard1 Scope This International Standard specifies a method of revealing pores or other discontinuities, when testing metallic coatings, that are not visibly affected by ferricyanide and chloride ions during the test period and that are cathodic to iron and steel. This method is especially useful for thick, hard chromium coatings used for wear resistance. NOTE 1 With some coating materials a very thin layer is dissolved by the sodium chloride solution