ASTM D4138-2007a 用横截面分割破坏法测定防护涂层系统干膜厚度的标准实施规程
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【英文标准名称】:StandardPracticesforMeasurementofDryFilmThicknessofProtectiveCoatingSystemsbyDestructive,Cross-SectioningMeans
【原文标准名称】:用横截面分割破坏法测定防护涂层系统干膜厚度的标准实施规程
【标准号】:ASTMD4138-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D01.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:覆层;测量;核能;涂漆;涂料;防护覆层;试验;厚度;厚度测量
【英文主题词】:coatingthickness;destructivemeans;dryfilmthickness;individualcoats;measurement;microscopicobservation;overallthickness;paintthickness;reticle;scale
【摘要】:Manycoatingpropertiesaremarkedlyaffectedbythefilmthicknessofthedryfilmsuchasadhesion,flexibility,andharness.Tobeabletocompareresultsobtainedbydifferentoperators,itisessentialtomeasurefilmthicknesscarefully.Mostprotectiveandhighperformancecoatingsareappliedtomeetarequirementoraspecificationforthedry-filmthicknessofeachcoat,orforthecompletesystem,orboth.Coatingsmustbeappliedwithinacertainminimumandmaximumthicknesstolerancesinorderthattheycanfulfilltheirintendedfunction.1.1Thispracticedescribesthemeasurementofdryfilmthicknessofcoatingfilmsbymicroscopicobservationofprecisionangularcutsinthecoatingfilm.Useoftheseproceduresmayrequirerepairofthecoatingfilm.Thispracticeisintendedtosupplementthemanufacturers''instructionsforthemanualoperationofthegagesandisnotintendedtoreplacethem.Itincludesdefinitionsofkeyterms,referencedocuments,thesignificanceanduseofthepractice,andtheadvantagesandlimitationsoftheinstruments.1.2Threeproceduresareprovidedformeasuringdryfilmthicknessofprotectivecoatingsystems:1.2.1ProcedureA-Usinggroovecuttinginstruments.1.2.2ProcedureB-Usinggrindinginstruments.1.2.3ProcedureC-Usingdrillbitinstruments.1.3Theseproceduresarenotapplicableforsoftorductilesubstratesthatmaydeformunderthetestgagecuttingtip.Thesubstrateshouldbesufficientlyrigidtopreventdeformationofthecoatingduringthecuttingprocess.Thesurfacemaybeflatormoderatelycurved.Pipesassmallas25mm(1in.)indiametermaybemeasuredintheaxialdirection.1.4Individualcoatsinamulticoatsystemwherethereisadiscerniblevisualdifferencebetweencoatsortheoverallthicknessofacoatingsystemcanbemeasuredbytheseprocedures.1.5Therangeofthicknessmeasurementistypically2to2000microns(0.1to80mils)anddependsuponthecuttingangleoftheblade.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:87_040
【页数】:6P.;A4
【正文语种】:
【原文标准名称】:用横截面分割破坏法测定防护涂层系统干膜厚度的标准实施规程
【标准号】:ASTMD4138-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D01.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:覆层;测量;核能;涂漆;涂料;防护覆层;试验;厚度;厚度测量
【英文主题词】:coatingthickness;destructivemeans;dryfilmthickness;individualcoats;measurement;microscopicobservation;overallthickness;paintthickness;reticle;scale
【摘要】:Manycoatingpropertiesaremarkedlyaffectedbythefilmthicknessofthedryfilmsuchasadhesion,flexibility,andharness.Tobeabletocompareresultsobtainedbydifferentoperators,itisessentialtomeasurefilmthicknesscarefully.Mostprotectiveandhighperformancecoatingsareappliedtomeetarequirementoraspecificationforthedry-filmthicknessofeachcoat,orforthecompletesystem,orboth.Coatingsmustbeappliedwithinacertainminimumandmaximumthicknesstolerancesinorderthattheycanfulfilltheirintendedfunction.1.1Thispracticedescribesthemeasurementofdryfilmthicknessofcoatingfilmsbymicroscopicobservationofprecisionangularcutsinthecoatingfilm.Useoftheseproceduresmayrequirerepairofthecoatingfilm.Thispracticeisintendedtosupplementthemanufacturers''instructionsforthemanualoperationofthegagesandisnotintendedtoreplacethem.Itincludesdefinitionsofkeyterms,referencedocuments,thesignificanceanduseofthepractice,andtheadvantagesandlimitationsoftheinstruments.1.2Threeproceduresareprovidedformeasuringdryfilmthicknessofprotectivecoatingsystems:1.2.1ProcedureA-Usinggroovecuttinginstruments.1.2.2ProcedureB-Usinggrindinginstruments.1.2.3ProcedureC-Usingdrillbitinstruments.1.3Theseproceduresarenotapplicableforsoftorductilesubstratesthatmaydeformunderthetestgagecuttingtip.Thesubstrateshouldbesufficientlyrigidtopreventdeformationofthecoatingduringthecuttingprocess.Thesurfacemaybeflatormoderatelycurved.Pipesassmallas25mm(1in.)indiametermaybemeasuredintheaxialdirection.1.4Individualcoatsinamulticoatsystemwherethereisadiscerniblevisualdifferencebetweencoatsortheoverallthicknessofacoatingsystemcanbemeasuredbytheseprocedures.1.5Therangeofthicknessmeasurementistypically2to2000microns(0.1to80mils)anddependsuponthecuttingangleoftheblade.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:87_040
【页数】:6P.;A4
【正文语种】:
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