1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 1071-2:2002 Incorporating Corrigendum No. 1 Advanced technical ceramics Methods of test for ceramic coatings Part 2: Determination of coating thickness by the cr
2、ater grinding method The European Standard EN 1071-2:2002 has the status of a British Standard ICS 81.060.30 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIBS EN 1071-2:2002 This British Standard, having been prepared under the dir
3、ection of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 29 November 2002 BSI 24 June 2004 ISBN 0 580 40870 1 National foreword This British Standard is the official English language version of EN
4、1071-2:2002. It supersedes DD ENV 1071-2:1994 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee RPI/13, Advanced technical ceramics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its
5、 secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic
6、Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to underst
7、and the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises
8、a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15227 Corrigendum No. 1 24 June 200
9、4 Addition of supersession details to National foreword Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10712 November2002 ICS81.060.30 SupersedesENV10712:1993 Englishversion Advanced
10、technicalceramicsMethodsoftestforceramic coatingsPart2:Determinationofcoatingthicknessbythe cratergrindingmethod CramiquestechniquesavancesMthodesdessaipour revtementscramiquesPartie2:Dterminationde lpaisseurdurevtementparlamthodedabrasiondune calottesphrique HochleistungskeramikVerfahrenzurPrfungke
11、ramischer SchichtenTeil2:BestimmungderSchichtdickemitdem Kalottenschleifverfahren ThisEuropeanStandardwasapprovedbyCENon10August2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalterat
12、ion.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoi
13、tsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKing
14、dom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN10712:2002E Licensed Copy: Wang Bin, ISO/Exchange Chi
15、na Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEN10712:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Significanceanduse .4 4 Sampling.4 5 Testprocedure .5 5.1 General5 5.2 Preparationofthetest. 5 5.3 Testparameters . 5 5.4 Exampleoftest. 5 6 Micros
16、copicexaminationandmeasurement . .6 6.1 Examination6 6.2 Measurement6 7 Definitions,symbolsandcalculation 7 7.1 Symbolsanddefinitions . 7 7.2 Calculations7 8 Testreport . .8 AnnexA (informative) Errorsassociatedwithusingdifferentformulaeforcalculatingfilmthickness 13 Bibliography 16 Licensed Copy: W
17、ang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEN10712:2002(E) 3 Foreword Thisdocument(EN10712:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC184“Advancedtechnical ceramics“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatu
18、sofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyMay2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby May2003. AnnexAisinformative. ThisdocumentsupersedesENV10712:1993. EN1071 AdvancedtechnicalceramicsMethodsoftestforceramiccoatings consistsofsev
19、enparts: Part1: Determinationofcoatingthicknessbycontactprobeprofilometer Part2: Determinationofcoatingthicknessbythecratergrindingmethod Part3: Determinationofadhesionandothermechanicalfailuremodesbyascratchtest Part4: Determinationofchemicalcomposition Part5: Determinationofporosity Part6: Determi
20、nationoftheabrasionresistanceofcoatingsbyamicroabrasionweartest Part7: DeterminationofhardnessandYoungsmodulusbyinstrumentedindentationtest AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cz
21、echRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEN10712:2002(E) 4 1S
22、cope ThispartofthisEuropeanStandardspecifiesamethodforthedeterminationofthethicknessofceramiccoatingsbya cratergrindingmethodwhichincludesthegrindingofasphericalcavityandsubsequentmicroscopicexaminationof thecrater. NOTE Analternativemeasurementofthickness,usingacontactprobeprofilometer,isspecifiedi
23、nEN10711. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublication
24、sapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). ENISO/IEC17025 Generalrequirementsforthecompetenceoftestingandcalibration laboratories(ISO/IEC17025:1999) ISO3290 RollingbearingsBal
25、lsDimensionsandtolerances. 3 Significanceanduse Thecoatingthicknessoftenplaysamajorroleintheperformanceofcoatedtoolsandmachineparts.Many differenttechniqueshavebeendevelopedforassessingthecoatingthickness.Amongthese,thecratergrinding methodandthestepheightmethod(seeEN10711)aremethodsthatareeasytoper
26、formandapplicabletomost coatedsystems. Themethodissimpleandstraightforward.Acraterisgroundintothecoatedpartbymeansofarotatingballwettedby anabrasiveslurry.Thethicknessofthecoatingisderivedfromtheballandcraterdimensionalcharacteristics. Contrastbetweenthedifferentmaterialsconstitutingthecoatingandsub
27、strateisaprerequisiteforthemethodto enablethedetectionoftheinterfacebetweenthecoatingandthesurface. NOTE Testspecimensshouldbeeitherflatorcylindrical.Flatnesscanbeconsideredassufficientifthelocalspecimen radiusofcurvature,R s,satisfiestherelationR s100R(forerror 1%). 4Sampling Arepresentativetestspe
28、cimenoftheproductundertestshallbeused.Testpiecesshallbecoatedoriginalitems,or wherethisisnotpossible,madeinthesamewayasthebatchtobetested.Forlargeparts,separatemanufacturingof thetestpiecemaybenecessary. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncont
29、rolled Copy, (c) BSIEN10712:2002(E) 5 5 Testprocedure 5.1General Aballwettedbyanabrasivesuspensionisrotatedagainstthesurfaceofthetestpiece.Asphericalwearcrateris thusproduced,andthetestisfinishedwhenthedepthofpenetrationofthesphericalcraterisgreaterthanthecoating thickness.Thecoatingthicknessisthend
30、erivedfromthesizeofthewearscars(fullcraterandsubstratecrater widths)andtheballdiameter. NOTE1 Differentsetupsoftestrigscanbeused.Theballcanberotatedfreelyonadriveshaft,wherebyitsmassisused toproducethecontactload,oritcanbeclampedinthedriveaxiswhilethespecimenisloadedbymeansofaleversystem. Alternativ
31、ely,awheelinsteadofaballcanbeused,inwhichcasethesamplemustalsoberotated(thisisthesameprinciple as dimplegrinderusedforthepreparationofTEMspecimens).AtypicalarrangementisshowninFigure1. NOTE2 Differentabrasives(e.g.diamond,alumina,silica)canbeused,andcommerciallyavailablesuspensionsbasedon alcohol,oi
32、lorwatercanbeapplied.Theabrasiveslurrycanbesmearedontotheballsurfacepriortotesting,butmore repeatablemeasurementsareachievedwhentheabrasiveslurryisdripfedintothecontactregion,e.g.byperistalticpumping ofastirredsuspension.Thegrainsizeoftheabrasivemustbesmalltoavoidrougheningofthecraterborders.Asanexa
33、mple, 1mdiamondpastesuspendedinethanolisoftenused. 5.2 Preparationofthetest Makesurethatthespecimenandballareclean.Ultrasoniccleaningfor5mininfreshpetroleumetherfollowedby dryinginambientairisusuallysufficient.Thesuitabilityoftheballshallbedeterminedbymeasuring10diametersat random.Aballshallbereject
34、edifthedifferencebetweenanytwomeasurementsexceeds5m(themaximum allowablevalueofV DWS forgradeG200ballsasgiveninISO3290(E),orifscratchesvisibletothenakedeyeare presentonthesurface.Prepareasuspensionofabrasiveparticlesinadilutingagent.Positionthetestpieceona stablesupport. NOTE1 Theabrasivesuspensions
35、houldbewellstirredtoensureauniformdispersionofabrasiveparticles. NOTE2 Hardenedsteelballsforrollingbearingscanbeusedwithaspecifieddiameterandsurfacefinishaccordingto ISO3290(E). 5.3 Testparameters Thetestspecificparametersinclude: a)ball diameter; b) contactload; c)sliding speed; d) compositionandco
36、ncentrationoftheabrasivesuspension; e) slurryfeedrate; f) durationofthetest. Thespecimenspecificparametersinclude: a) surfacequality(roughness,cleanliness); b) opticalcontrastbetweencoating(s)andsubstrate. 5.4 Exampleoftest Typicaloperatingparametersareasfollows: a)ball diameter: 25 mm; Licensed Cop
37、y: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEN10712:2002(E) 6 b) contactload:0,25N; c) rotationalspeed:100rpm; d) compositionoftheabrasivesuspension:1mgrainsizediamondpastesuspendedinethanol; e) abrasivesuspensionconcentrationof1:4; f) slur
38、ryfeedrate:20drops/min; g) testduration:5min. NOTE Optimumtestconditionswillbedifferentfordifferentspecimens.Theaboveconditionsaretypicalforthin(fewmin thickness)hardcoatingsonmetallicsubstrates. 6 Microscopicexaminationandmeasurement 6.1Examination Itismandatorytocleanthespecimenpriortoexamination(
39、cf.clause5.2). Animagingtechniquewithcalibratedsizemeasurementshallbeused.Examinethegroundcavityatthehighest magnificationatwhichthecompleteworncraterisvisible. Focusthemicroscopeontheconcentricpatternsandifnecessaryadjusttheilluminationtoobtainmaximum contrast. NOTE Usually,anoptical,reflectedlight
40、microscopeisused,butanyotherimagingtechniquesuchasscanningelectron microscopycanbeused,e.g.whenitisnotpossibletodiscriminatebetweenthecoatingandthesubstratebyothermeans.In thecaseofopticalmicroscopy,etchingcanbeusedtoenhancecontrastbetweenthesubstrateandcoating. 6.2Measurement Measurethecraterdimens
41、ionsasappropriateusingacalibratedmeasuringdevice. ForflatspecimensmeasurethediametersD,d,orlengthsX,Y,ofthecircularcharacteristicsbothparalleland perpendiculartothedirectionofballrotation(Figure2). Forcylindricalspecimensmeasureonlythelargestdimensionsofthecircularcharacteristics,parallelwiththecyli
42、nder axis(Figure3). Atleast5measurementsshallbecarriedouttodefinetherepeatabilityofthemeasurement. NOTE1 Sizemeasurementcaneasilybeachievedbypreparingamicrographofthecavityaswellasofatraceably calibratedscaleatthesamemagnification. NOTE2 Duetosurfaceroughnesseffects,theboundariesofthelayer(s)cannotb
43、ewelldefinedandthebestestimateofthe centrelineofaboundaryshouldbeused. NOTE3 Theaccuracyofthemeasurementisdependentontheroughnessofthesurfacesdelineatingtheboundariesofthe layer. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 31 August 2004, Uncontrolled Copy, (c) BSIEN107
44、12:2002(E) 7 7 Definitions,symbolsandcalculation 7.1 Symbolsanddefinitions Thefollowingsymbolsanddefinitionsshallbeused: R: radiusoftheball,inmicrometres(seeFigure2); R s : radiusofcurvatureofspecimen; h: thicknessofthecoating,inmicrometres(seeFigure2); T: totalpenetrationdepthoftheball,inmicrometres(seeFigure2); t: penetrationdepthinthesubstrate,inmicr
