ASTM B567-1998(2009a) 用β射线反向散射法测量镀层厚度的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasurementofCoatingThicknessbytheBetaBackscatterMethod
【原文标准名称】:用β射线反向散射法测量镀层厚度的标准试验方法
【标准号】:ASTMB567-1998(2009a)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aperture,betabackscatter,coatingthickness,isotope;Betabackscatter;Coatingthickness;Electrodepositedcoatings;Ferrousmetals/alloys;Instrumentalmeasurement--electrodepositedcoatings;Massperunitarea;Metalliccoatings;Nondestructiveevalu
【摘要】:Thethicknessormassperunitareaofacoatingisoftencriticaltoitsperformance.Forsomecoating-substratecombinations,thebetabackscattermethodisareliablemethodformeasuringthecoatingnondestructively.Thetestmethodissuitableforthicknessspecificationacceptanceifthemassperunitareaisspecified.Itisnotsuitableforspecificationacceptanceifthecoatingthicknessisspecifiedandthedensityofthecoatingmaterialcanvaryorisnotknown.1.1Thistestmethodcoversthebetabackscattergagesforthenondestructivemeasurementofmetallicandnonmetalliccoatingsonbothmetallicandnonmetallicsubstratematerials.1.2Thetestmethodmeasuresthemassofcoatingperunitarea,whichcanalsobeexpressedinlinearthicknessunitsprovidedthatthedensityofthecoatingisknown.1.3Thetestmethodisapplicableonlyiftheatomicnumbersorequivalentatomicnumbersofthecoatingandsubstratedifferbyanappropriateamount(see6.2).1.4Betabackscatterinstrumentsemployanumberofdifferentradioactiveisotopes.Althoughtheactivitiesoftheseisotopesarenormallyverylow,theycanpresentahazardifhandledincorrectly.Thisstandarddoesnotpurporttoaddressthesafetyissuesandtheproperhandlingofradioactivematerials.ItistheresponsibilityoftheusertocomplywithapplicableStateandFederalregulationsconcerningthehandlinganduseofradioactivematerial.SomeStatesrequirelicensingandregistrationoftheradioactiveisotopes.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】:英语