ASTM B767-1988(2010) 重量分析法和其它化学分析法测定电沉积涂层及相关涂层单位面积质量的标准指南
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【英文标准名称】:StandardGuideforDeterminingMassPerUnitAreaofElectrodepositedandRelatedCoatingsbyGravimetricandOtherChemicalAnalysisProcedures
【原文标准名称】:重量分析法和其它化学分析法测定电沉积涂层及相关涂层单位面积质量的标准指南
【标准号】:ASTMB767-1988(2010)
【标准状态】:现行
【国别】:
【发布日期】:1988
【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】:B08.10
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptancecriteria/testing--coatings;Aluminumcoatings;Anodiccoatings;Averagemassperunitarea;Brasselectrodeposition;Cadmiummetals(coating/plating);Chemicalanalysis;Chromatecoatings;Chromiumelectroplating;Coatingthickness;Density--me
【摘要】:Thethicknessofacoatingiscriticaltoitsperformanceandisspecifiedinmanyspecificationscallingforcoatings.Theseproceduresareusedforacceptancetestingandappearinafewspecifications.Coatingthicknessinstrumentsareoftencalibratedwiththicknessstandardsthatarebasedonmassandareameasurements.Theaveragethicknessofacoatingonthemeasuredareacanbecalculatedfromitsmassperunitareaonlyifthedensityofthecoatingmaterialisknown.1.1Thisguideoutlinesageneralmethodfordeterminingthemassperunitareaofelectrodeposited,electroless,mechanically-deposited,vacuum-deposited,anodicoxide,andchemicalconversioncoatingsbygravimetricandotherchemicalanalysisprocedures.1.2Thisguidedeterminestheaveragemassperunitareaoverameasuredarea.1.3Thestrippingmethodscitedaredescribedinspecificationsorintheopenliteratureorhavebeenusedroutinelybyatleastonelaboratory.1.4Theproceduresoutlinedcanbeusedformanycoating-substratecombinations.Theycannotbeusedwherethecoatingcannotbeseparatedfromthesubstratebychemicalorphysicalmeansaswouldbethecaseifwhitebrasswereplatedwithyellowbrass.1.5Inprinciple,theseprocedurescanbeusedtomeasureverythincoatingsortomeasurecoatingsoversmallareas,butnotthincoatingsoversmallareas.Thelimitsdependontherequiredaccuracy.Forexample,2.5mg/cm2ofcoatingmightrequire2.5mgofcoatingcovering1cm2,but0.1mg/cm2ofcoatingwouldrequire25cm2toobtain2.5mgofcoating.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】:
【原文标准名称】:重量分析法和其它化学分析法测定电沉积涂层及相关涂层单位面积质量的标准指南
【标准号】:ASTMB767-1988(2010)
【标准状态】:现行
【国别】:
【发布日期】:1988
【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】:B08.10
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:Acceptancecriteria/testing--coatings;Aluminumcoatings;Anodiccoatings;Averagemassperunitarea;Brasselectrodeposition;Cadmiummetals(coating/plating);Chemicalanalysis;Chromatecoatings;Chromiumelectroplating;Coatingthickness;Density--me
【摘要】:Thethicknessofacoatingiscriticaltoitsperformanceandisspecifiedinmanyspecificationscallingforcoatings.Theseproceduresareusedforacceptancetestingandappearinafewspecifications.Coatingthicknessinstrumentsareoftencalibratedwiththicknessstandardsthatarebasedonmassandareameasurements.Theaveragethicknessofacoatingonthemeasuredareacanbecalculatedfromitsmassperunitareaonlyifthedensityofthecoatingmaterialisknown.1.1Thisguideoutlinesageneralmethodfordeterminingthemassperunitareaofelectrodeposited,electroless,mechanically-deposited,vacuum-deposited,anodicoxide,andchemicalconversioncoatingsbygravimetricandotherchemicalanalysisprocedures.1.2Thisguidedeterminestheaveragemassperunitareaoverameasuredarea.1.3Thestrippingmethodscitedaredescribedinspecificationsorintheopenliteratureorhavebeenusedroutinelybyatleastonelaboratory.1.4Theproceduresoutlinedcanbeusedformanycoating-substratecombinations.Theycannotbeusedwherethecoatingcannotbeseparatedfromthesubstratebychemicalorphysicalmeansaswouldbethecaseifwhitebrasswereplatedwithyellowbrass.1.5Inprinciple,theseprocedurescanbeusedtomeasureverythincoatingsortomeasurecoatingsoversmallareas,butnotthincoatingsoversmallareas.Thelimitsdependontherequiredaccuracy.Forexample,2.5mg/cm2ofcoatingmightrequire2.5mgofcoatingcovering1cm2,but0.1mg/cm2ofcoatingwouldrequire25cm2toobtain2.5mgofcoating.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】:
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