Designation:G59−97(Reapproved2014)StandardTestMethodforConductingPotentiodynamicPolarizationResistanceMeasurements1ThisstandardisissuedunderthefixeddesignationG59;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversanexperimentalprocedureforpolarizationresistancemeasurementswhichcanbeusedforthecalibrationofequipmentandverificationofexperimentaltechnique.Thetestmethodcanprovidereproduciblecorrosionpotentialsandpotentiodynamicpolarizationresistancemea-surements.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2G3PracticeforConventionsApplicabletoElectrochemicalMeasurementsinCorrosionTestingG5ReferenceTestMethodforMakingPotentiodynamicAnodicPolarizationMeasurementsG102PracticeforCalculationofCorrosionRatesandRe-latedInformationfromElectrochemicalMeasurements3.SignificanceandUse3.1Thistestmethodcanbeutilizedtoverifytheperfor-manceofpolarizationresistancemeasurementequipmentin-cludingreferenceelectrodes,electrochemicalcells,potentiostats,scangenerators,measuringandrecordingde-vices.Thetestmethodisalsousefulfortrainingoperatorsinsamplepreparationandexperimentaltechniquesforpolariza-tionresistancemeasurements.3.2Polarizationresistancecanberelatedtotherateofgeneralcorrosionformetalsatorneartheircorrosionpotential,Ecorr.Polarizationresistancemeasurementsareanaccurateandrapidwaytomeasurethegeneralcorrosionrate.Realtimecorrosionmonitoringisacommonapplication.Thetechniquecanalsobeusedasawaytorankalloys,inhibitors,a...
