Designation:C1300−95(Reapproved2016)StandardTestMethodforLinearThermalExpansionofGlazeFritsandCeramicWhitewareMaterialsbytheInterferometricMethod1ThisstandardisissuedunderthefixeddesignationC1300;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheinterferometricdetermina-tionoflinearthermalexpansionofpremeltedglazefritsandfiredceramicwhitewarematerialsattemperatureslowerthan1000°C(1830°F).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E289TestMethodforLinearThermalExpansionofRigidSolidswithInterferometry3.SignificanceandUse3.1Thistestmethoddefinesthethermalexpansionofglazefritsbytheinterferometricmethod.Thisdeterminationiscriticalinavoidingcrazing(cracking)oftheseglasscoatingsduetomismatchingofthethermalexpansionbetweenthecoatingandsubstratematerials.4.Apparatus4.1SamplePreparationEquipment:34.1.1GlazedPorcelainCrucible,No.0.4.1.2FireclayCrucible,102mm(4in.)indiameter.4.1.3RotatingAbrasiveGrindingWheel(asiliconcarbidetypeissatisfactory).4.2MicrometerCalipers,havingasensitivitysuchthattheindexcanbereadto0.002mm(0.0001in.).4.3MeasuringApparatus,consistingoffusedsilicainter-ferometerplates,viewingapparatus,anelectricfurnaceandcontrol,potentiometer,pyrometer,andasuitablemonochro-maticlightsourceofknownwavelength.4.3.1Furnace—Thefurnaceshallbeaverticalelectrictubefurnacecontrolledbyrheostatorothermeanssothattheheatingrateofthefurnacecanbereadilyduplicatedfromroomtemperatureto1000°C(1830°F).Theheatingrateshallnotexceed3°C(5.5°F)/min.4.3.2Temperature-MeasuringInstrument—Acalibratedplatinumversuspl...
