BS ISO 15724-2001 金属和其它无机涂层.钢的可扩散氢的电化测量.茗荷芥(Barnacle)电极法
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【英文标准名称】:Metallicandotherinorganiccoatings.Electrochemicalmeasurementofdiffusiblehydrogeninsteels.Barnacleelectrodemethod
【原文标准名称】:金属和其它无机涂层.钢的可扩散氢的电化测量.茗荷芥(Barnacle)电极法
【标准号】:BSISO15724-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-12-21
【实施或试行日期】:2001-12-21
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:可扩散氢;电化学方法;电极;氢浓度;无机材料;测量;测量技术;金属覆层;钢棒;钢板;表面处理
【英文主题词】:Diffusiblehydrogen;Electrochemicalmethods;Electrodes;Hydrogenconcentration;Inorganicmaterials;Measurement;Measuringtechniques;Metalcoatings;Steelbars;Steelplates;Surfacetreatment
【摘要】:ThisInternationalStandarddescribesamethodthatusesanelectronichydrogendetectioninstrumentformeasuringrelative,diffusiblehydrogenconcentrationsinbaresteelsorinplatedsteelsafterthecoatinghasbeenremoved.Itisassumedthatthehydrogenisuniformlydistributedthroughoutapart.Themethoddoesnotmeasureactualhydrogenconcentration.However,oxidationcurrentdensitiesmeasuredagainsttimeprovideausefulindicationofrelativehydrogenconcentrationsand,therefore,themeasurementscanbeusedforcomparisonpurposes.Themethodmaybeusedasaqualitycontrolprocedureasitdoesprovideaquickmeansofmeasuringtheeffectivenessofpre-and/orpost-platingheattreatmentsorofmonitoringhydrogenuptakeduringplatingorduetocorrosion.Itisimportanttonotethattheabsenceoffailureinaparticulartestdoesnotprovideconfirmationofcompleteeliminationofhydrogenembrittlementbecausenoonetestmethodcanprovideallthedatanecessarytoevaluatethedegreeofhydrogendegradation.Forunplatedpartsthemethodisnon-destructive;however,forplatedpartsthecoatinghastoberemovedpriorto.measurementbyameansprovennottodamagethesteelortointroducehydrogen.Thistestmethodislimitedto:—carbonandalloysteels,excludingausteniticstainlesssteels(seenote1);—flatspecimenstowhichthecellcanbeattached(seenote2);—measurementsatroomtemperature(25℃±1℃).NOTE1Ifthismethodisusedforausteniticstainlesssteelsandotherfacecentredcubic(FCC)alloys,measurementtimesandinterpretationofresultswillhavetobedeterminedbecauseofthedifferentkineticsinvolved.NOTE2Forslightlycurvedsurfacesitisessentialtodefineanareathatisreproducible.TheareacalculationwillbedifferentfromthatdescribedinthisInternationalStandard.NOTE3Themethodcanbeappliedtosmallparts,however,thisnecessitatessomemodificationofthetechnique,procedureandinterpretationofresults.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:20P.;A4
【正文语种】:英语
【原文标准名称】:金属和其它无机涂层.钢的可扩散氢的电化测量.茗荷芥(Barnacle)电极法
【标准号】:BSISO15724-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-12-21
【实施或试行日期】:2001-12-21
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:可扩散氢;电化学方法;电极;氢浓度;无机材料;测量;测量技术;金属覆层;钢棒;钢板;表面处理
【英文主题词】:Diffusiblehydrogen;Electrochemicalmethods;Electrodes;Hydrogenconcentration;Inorganicmaterials;Measurement;Measuringtechniques;Metalcoatings;Steelbars;Steelplates;Surfacetreatment
【摘要】:ThisInternationalStandarddescribesamethodthatusesanelectronichydrogendetectioninstrumentformeasuringrelative,diffusiblehydrogenconcentrationsinbaresteelsorinplatedsteelsafterthecoatinghasbeenremoved.Itisassumedthatthehydrogenisuniformlydistributedthroughoutapart.Themethoddoesnotmeasureactualhydrogenconcentration.However,oxidationcurrentdensitiesmeasuredagainsttimeprovideausefulindicationofrelativehydrogenconcentrationsand,therefore,themeasurementscanbeusedforcomparisonpurposes.Themethodmaybeusedasaqualitycontrolprocedureasitdoesprovideaquickmeansofmeasuringtheeffectivenessofpre-and/orpost-platingheattreatmentsorofmonitoringhydrogenuptakeduringplatingorduetocorrosion.Itisimportanttonotethattheabsenceoffailureinaparticulartestdoesnotprovideconfirmationofcompleteeliminationofhydrogenembrittlementbecausenoonetestmethodcanprovideallthedatanecessarytoevaluatethedegreeofhydrogendegradation.Forunplatedpartsthemethodisnon-destructive;however,forplatedpartsthecoatinghastoberemovedpriorto.measurementbyameansprovennottodamagethesteelortointroducehydrogen.Thistestmethodislimitedto:—carbonandalloysteels,excludingausteniticstainlesssteels(seenote1);—flatspecimenstowhichthecellcanbeattached(seenote2);—measurementsatroomtemperature(25℃±1℃).NOTE1Ifthismethodisusedforausteniticstainlesssteelsandotherfacecentredcubic(FCC)alloys,measurementtimesandinterpretationofresultswillhavetobedeterminedbecauseofthedifferentkineticsinvolved.NOTE2Forslightlycurvedsurfacesitisessentialtodefineanareathatisreproducible.TheareacalculationwillbedifferentfromthatdescribedinthisInternationalStandard.NOTE3Themethodcanbeappliedtosmallparts,however,thisnecessitatessomemodificationofthetechnique,procedureandinterpretationofresults.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:20P.;A4
【正文语种】:英语
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