NF A91-149*NF EN ISO 15720:2001 Metallic coatings - Porosity tests - Porosity in gold or palladium coatings on metal substrates by gel-bulk electrography.
2001NF A91-149*NF EN ISO 15720:2001 Metallic coatings - Porosity tests - Porosity in gold or palladium coatings on metal substrates by gel-bulk electrography.