【英文标准名称】:StandardTestMethodforMeasurementofCoatingThicknessbyX-RaySpectrometry
【原文标准名称】:用X射线光度法测量镀层厚度的标准试验方法
【标准号】:ASTMB568-1998(2009)
【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】:absorption;collimator;emission;filter;ratio;X-ray;Performance--metals/alloysmaterials/applications;Radiationexposure;Substrates--coatingapplications;Surfaceanalysis--electrodeposits/electroplating;Thickness--electrodepositedcoatings;XRF(X
【摘要】:Thisisasensitive,noncontact,andnondestructivemethodformeasuringthecoatingthickness(andinsomecases,coatingcomposition)ofmetallicandsomenonmetalliccoatingsoverarangeofthicknessesfromaslittleas0.01x03BC;mtoasmuchas75x03BC;mdependingonthecoatingandsubstratematerials.Itcanbeusedtomeasurecoatingandbasecombinationsthatarenotreadilymeasuredbyothertechniques.Thecoatingthicknessisanimportantfactorintheperformanceofacoatinginservice.1.1ThistestmethodcoverstheuseofX-rayspectrometrytodeterminethicknessofmetallicandsomenonmetalliccoatings.1.2ThemaximummeasurablethicknessforagivencoatingisthatthicknessbeyondwhichtheintensityofthecharacteristicsecondaryXradiationfromthecoatingorthesubstrateisnolongersensitivetosmallchangesinthickness.1.3Thistestmethodmeasuresthemassofcoatingperunitarea,whichcanalsobeexpressedinunitsoflinearthicknessprovidedthatthedensityofthecoatingisknown.1.4ProblemsofpersonnelprotectionagainstradiationgeneratedinanX-raytubeoremanatingfromaradioisotopesourcearenotcoveredbythistestmethod.Forinformationonthisimportantaspect,referenceshouldbemadetocurrentdocumentsoftheNationalCommitteeonRadiationProtectionandMeasurement,FederalRegister,NuclearRegulatoryCommission,NationalInstituteofStandardsandTechnology(formerlytheNationalBureauofStandards),andtostateandlocalcodesifsuchexist.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:17_040_20
【页数】:8P.;A4
【正文语种】:英语