Designation:B798−95(Reapproved2014)StandardTestMethodforPorosityinGoldorPalladiumCoatingsonMetalSubstratesbyGel-BulkElectrography1ThisstandardisissuedunderthefixeddesignationB798;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversequipmentandtechniquesfordeterminingporosityinnoblemetalcoatings,particularlyelectrodepositsandcladmetalsusedonelectricalcontacts.1.2Thetestmethodisdesignedtoshowwhethertheporositylevelislessorgreaterthansomevaluewhichbyexperienceisconsideredbytheusertobeacceptablefortheintendedapplication.1.3OtherporositytestingmethodsareoutlinedinGuideB765.Detailedcriticalreviewsofporositytestingarealsoavailable.2OtherporositytestmethodsareB735,B741,B799,andB809.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesinparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSections7and8.2.ReferencedDocuments2.1ASTMStandards:3B374TerminologyRelatingtoElectroplatingB542TerminologyRelatingtoElectricalContactsandTheirUseB735TestMethodforPorosityinGoldCoatingsonMetalSubstratesbyNitricAcidVaporB741TestMethodforPorosityInGoldCoatingsOnMetalSubstratesByPaperElectrography(Withdrawn2005)4B765GuideforSelectionofPorosityandGrossDefectTestsforElectrodepositsandRelatedMetallicCoatingsB799TestMethodforPorosityinGoldandPalladiumCoatingsbySulfurousAcid/Sulfur-DioxideVaporB809TestMethodforPorosityinMetallicCoatingsbyHumidSulfurVapor(“Flow...
