ASTM G102-1989(2004)e1 和相关的电化测量信息腐蚀率的计算

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【英文标准名称】:StandardPracticeforCalculationofCorrosionRatesandRelatedInformationfromElectrochemicalMeasurements
【原文标准名称】:和相关的电化测量信息腐蚀率的计算
【标准号】:ASTMG102-1989(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1989
【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】:G01.11
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:测量技术;电化学;电化学腐蚀
【英文主题词】:corrosioncurrent;corrosionrate;electrochemical;equivalentweight;polarizationresistance;Tafelslopes
【摘要】:Electrochemicalcorrosionratemeasurementsoftenprovideresultsintermsofelectricalcurrent.AlthoughtheconversionofthesecurrentvaluesintomasslossratesorpenetrationratesisbasedonFaraday’Law,thecalculationscanbecomplicatedforalloysandmetalswithelementshavingmultiplevalencevalues.Thispracticeisintendedtoprovideguidanceincalculatingmasslossandpenetrationratesforsuchalloys.Sometypicalvaluesofequivalentweightsforavarietyofmetalsandalloysareprovided.Electrochemicalcorrosionratemeasurementsmayprovideresultsintermsofelectricalresistance.Theconversionoftheseresultstoeithermasslossorpenetrationratesrequiresadditionalelectrochemicalinformation.Someapproachesforestimatingthisinformationaregiven.Useofthispracticewillaidinproducingmoreconsistentcorrosionratedatafromelectrochemicalresults.Thiswillmakeresultsfromdifferentstudiesmorecomparableandminimizecalculationerrorsthatmayoccurintransformingelectrochemicalresultstocorrosionratevalues.1.1Thispracticecoverstheprovidingofguidanceinconvertingtheresultsofelectrochemicalmeasurementstoratesofuniformcorrosion.Calculationmethodsforconvertingcorrosioncurrentdensityvaluestoeithermasslossratesoraveragepenetrationratesaregivenformostengineeringalloys.Inaddition,someguidelinesforconvertingpolarizationresistancevaluestocorrosionratesareprovided.
【中国标准分类号】:A29
【国际标准分类号】:77_060
【页数】:7P.;A4
【正文语种】: