1、BSISO19674:2025Fineceramics(advancedceramics,advancedtechnicalceramics)MethodsoftestforceramiccoatingsDeterminationofinternalstressinceramiccoatingsbyapplicationoftheStoneyformulabsi.NationalforewordThisBritishStandardistheUKimplementationofISO19674:2025.ItsupersedesBSISO19674:2017,whichiswithdrawn.
2、TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeRPI13,Advancedtechnicalceramics.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assu
3、ranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovide
4、dasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025I
5、SBN9780539335064ICS81.060.30CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30June2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedInternationalStandardISO19674Secondeditio
6、n2025-06Fineceramics(advancedceramics,advancedtechnicalceramics)一MethodsoftestforceramiccoatingsDeterminationofinternalstressinceramiccoatingsbyapplicationoftheStoneyformulaCeramiquesfines(ceramiquesavancees,Ceramiquestechniquesavancees)MethodesdessaidesrevelementsceramiquesDeterminationdelacontrain
7、teinternedesrevetementsceramiquesparapplicationdelaformuledeStoneyReferencenumberISO19674:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,elect
8、ronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.
9、orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Principle15 Apparatus26 Preparationoftestspecimens36.1 Material36.2 Samplegeometry36.3 Samplesurfacefinish36.4 Sampledimensions37 Procedure47.1 Measuringrangeandinitia
10、lprofile47.2 Depositionofthecoating47.3 Coatingthickness57.4 Adjustingthesamplegeometryafterdepositionofthecoating57.5 Measuringthefinalprofile57.6 Calculationofstress67.6.1 fs0,0267.6.2 0,02fs0,177.7 Numberofrepeatmeasurements78 Limitstomethod79 Testreport7Annex A (informative)Determinationofsuitab
11、ledimensionsforthetestsample9Annex B (informative)Internalstresscalculationinceramiccoatingofrealcomponents11Bibliography13ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycar
12、riedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmentabinliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalEle
13、ctrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentsshouldbenoted.Thisdocument
14、wasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seewww.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereo
15、f.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatwww.iso.org/patents.ISOshallnotbeheldresponsibleforide
16、ntifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetoth
17、eWorldTradeOrganization(WTo)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.isoQrgisoforeword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC206,Fineceramics.Thissecondeditioncancelsandreplacesthefirstedition(ISO19674:2017),whichhasbeentechnicallyrevised.Themainchangesareasfollows:一intheSc
18、ope,thesubstrateislimitedtoisotropicones;一inClause5,thecontentsofEXAMPLEarealldeletedduetoanincorrectFOlTnUIaanditsweakcorrelation;一in75thecalculationforReXPhasbeenrevised;attheendof7l5jaschematicdiagram(Figure1)andanapproximatecalculationofReXPfromdeflectionhasbeenaddedandtheformularenumberedtoForm
19、ula(3);一AnneXBhasbeenadded.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.Acompletelistingofthesebodiescanbefoundatwww.iso.org/membnrs.htmLIntroductionThereisanincreasinguseofcoatingstoimprovethefunctionalperformanceofmaterialsandcomponents.Thiscanbetoprotectagai
20、nstdamageduetoexposuretodemandingenvironmentsincludinghighstressesandaggressivechemicalenvironments,butcanalsobetomodifymanyotherproperties,e.g.thermalconductivitythroughthermalbarriercoatings,frictionthroughlowfrictioncoatings,suchasdiamondlikecarbon(DLC),andopticalreflectivitythroughcoatingswithco
21、ntrolledopticalproperties.Appropriatechoiceofcoatingsforparticularapplicationsdependsonthemechanicalandotherfunctionalrequirementsthatarise.Onefactorthatcanbecrucialindeterminingcoatingperformanceandlifetimeistheresidualstressthatisgeneratedbythedepositionprocessand/orbythermalexpansionmismatchbetwe
22、enthecoatingandthesubstrateasthecomponentiscooledfromtheprocessingtemperature.ThisdocumentdescribestheapplicationofasimpleexperimentaltechniqueusingtheStoneyformulatoanalysethecoatinginducedbendingofcoupons,ofknownmechanicalproperties,todeterminetheresidualstressinthecoating.BSISO19674:2025Fineceram
23、ics(advancedceramics,advancedtechnicalceramics)Methodsoftestforceramiccoatings一DeterminationofinternalstressinceramiccoatingsbyapplicationoftheStoneyformula1 ScopeThisdocumentspecifiesamethodfordeterminationoftheinternalstressinthinceramiccoatings.TheinternalstressisdeterminedbyapplicationoftheStone
24、yformulatotheresultsobtainedfrommeasurementoftheradiusofcurvatureofisotropicstripsordiscswithsingle-facecoating.2 NormativereferencesTherearenonormativereferencesinthisdocument.3 TermsanddefinitionsNotermsanddefinitionsarelistedinthisdocument.ISOandIECmaintainterminologydatabasesforuseinstandardizat
25、ionatthefollowingaddresses:一ISOOnlinebrowsingplatform:availableathttps:WWW.iso.org/obp一IECElectropedia:availableathttps:/WWW.olectropediaorg/4 PrincipleCoatingstressoftenplaysamajorroleintheperformanceofcoatedtoolsandmachineparts.Differenttechniqueshavebeendevelopedforthedeterminationofcoatingstress
26、Thetechniqueconsideredinthisdocumentcalculatesthestressfrommeasurementofthebowingofthindiscsorstripsofwell-characterizedmaterialsofknownthicknessthathavebeencoatedononesideonly.Itisassumedthatthedeformationiselastic,i.e.ifthecoatingweretoberemovedthesubstratewouldreturntoitsinitialshape.Providedtha
27、tthecoatingisthincomparedtothethicknessofthesubstrate(coatingthickness20m)radiiofcurvatureusingopticaltechniques.Beforemeasuringtheinitialprofile,defineameasuringrange(length),alongthelengthaofthesubstrate(alongadiameterforthedisc).Inordertoavoidanyedgeeffects,themeasuringrangeshouldstopatadistancefromtheendsequaltoatleast20timesthesamplethickness.Makesomereferencemarks,e.g.Vickersindentations,onthesubstratealongastraightlineatlengthdirection,sothatthefinalprofilecan
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