ASTM B499-1996(2002) 用磁性法测量磁性基底金属的非磁性镀层厚度的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasurementofCoatingThicknessesbytheMagneticMethod:NonmagneticCoatingsonMagneticBasisMetals
【原文标准名称】:用磁性法测量磁性基底金属的非磁性镀层厚度的标准试验方法
【标准号】:ASTMB499-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:非磁性;覆层;金属的;磁的;测量;厚度;金属;测量技术
【英文主题词】:coatingthickness;coatings;magneticmethod;nonmagneticcoatings;thickness;thicknesstesting;NumberCode17.040.20(Propertiesofsurfaces)
【摘要】:Thethicknessofacoatingisoftencriticaltoitsperformance.Formostnonferrouscoatingsonsteel,themagneticmethodisreliableformeasuringcoatingthicknessnondestructivelyandissuitableforspecificationacceptancetestingandSPC/SQCapplications.Thetestmethodrequiresthatthemagneticpropertiesofthesubstrateusedduringthecalibrationbethesameasthatofthetestspecimen.1.1Thistestmethodcoverstheuseofmagneticinstrumentsforthenondestructivemeasurementofthethicknessofnonmagneticcoatingsoverferrousorothermagneticbasemetals.Note18212;Autocatalyticallydepositednickel-phosphorusalloyscontainingmorethan8%phosphorusaresufficientlynonmagnetictobemeasuredbythistestmethod,aslongasthemeasurementismadepriortoanyheattreatment.1.2Theseinstrumentsmeasureeitherthemagneticattractionbetweenamagnetandthebasismetal,asinfluencedbythepresenceofthecoating,orthereluctanceofamagnetic-fluxpathpassingthroughthecoatingandthebasismetal.1.3MeasurementsmadeinaccordancewiththistestmethodwillbeincompliancewiththerequirementsofISOInternationalStandard2178asprintedin1982.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:17_040_20
【页数】:4P.;A4
【正文语种】: