ASTM D 5631-2000 Halon1301,三氟甲溴搬运及储存的标准规范
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来源:标准资料网
【英文标准名称】:StandardPracticeforHandlingTransportationandStorageofHalon1301Bromotrifluoromethane(CF3BR)
【原文标准名称】:Halon1301,三氟甲溴搬运及储存的标准规范
【标准号】:ASTMD5631-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:回收;再循环;搬运;传输;储存;运输;运输;实施规程;CF3BR;起火抑制剂;恢复;爆炸抑制剂;压缩气体;三氟甲溴;材料搬运
【英文主题词】:
【摘要】:
【中国标准分类号】:G17
【国际标准分类号】:13_220_10
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforCoulometricReductionofSurfaceFilmsonMetallicTestSamples
【原文标准名称】:在金属试样上表面薄膜的电量(库仑)减少的标准试验方法
【标准号】:ASTMB825-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:B02.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:atmosphericcorrosion;atmospherictestevaluation;cathodicreduction;controlcouponevaluation;corrosionfilmanalysis;environmentaltesting;monitoringenvironmentaltests;Corrosion--metals/alloys;Coulometry--metallicmaterials;Cathodicreduction
【摘要】:Thepresenttrendinenvironmentaltestingofmaterialswithelectricallyconductivesurfacesistoproduce,underacceleratedlaboratoryconditions,corrosionandfilm-formingreactionsthataresimilartothosethatcausefailuresinserviceenvironments.Inmanyoftheseproceduresthepartsundertestareexposedfordaysorweekstocontrolledquantitiesofbothwatervaporandpollutantgases,whichmaybepresentinextremelydiluteconcentrations.Note28212;DescriptionsofsuchtestscanbefoundinPracticeB827.Manyoftheseenvironmentaltestmethodsrequiremonitoringoftheconditionswithinthechamberduringthetestinordertoconfirmthattheintendedenvironmentallyrelatedreactionsareactuallytakingplace.Themostcommontypeofmonitorconsistsofcopper,silver,orothermetalliccouponsthatareplacedwithinthetestchamberandthatreactwiththecorrosiveenvironmentinmuchthesamewayasthesignificantsurfacesofthepartsundertest.Inpractice,aminimumnumberofcontrolcouponsareplacedineachspecifiedlocation(seeTestMethodB810)withinthechamberforaspecifiedexposuretime,dependingupontheseverityofthetestenvironment.Attheendofthistimeinterval,themetalsamplesareremovedandanalyzedbythecoulometricreductionprocedure.Othercorrosionfilmevaluationtechniquesformetalliccouponsarealsoavailable.Themostcommonoftheseismassgain,whichisnondestructivetothesurfacefilms,butislimitedtothedeterminationofthetotalamountofadditionalmassacquiredbythemetalasaresultoftheenvironmentalattack.Note38212;Detailedinstructionsforconductingsuchweighings,aswellascouponcleaningandsurfacepreparationprocedures,areincludedaspartofTestMethodB810.Note48212;Somesurfaceanalyticaltechniques(suchasX-raymethods)canprovidenondestructiveidentificationofsomecompoundsinthefilms,butsuchmethods,forexample,X-raydiffraction,canmissamorphouscompoundsandcompoundspresentinquantitieslessthan5%ofthetarnishfilmvolume.Withthecoulometrictechnique,itispossibletoresolvethecomplextotalfilmintoanumberofindividualcomponents(Fig.1)sothatcomparisonscanbemade.Thisresolvingpowerprovidesafingerprintcapabilityforidentifyingsignificantdeviationsfromintendedtestconditions,andacomparisonofthecorrosivecharacteristicsofdifferentenvironmentalchambersandofdifferenttestrunswithinthesamechamber.Thecoulometricreductionprocedurecanalsobeusedintestdevelopmentandintheevaluationoftestsamplesthathavebeenexposedatindustrialorotherapplicationenvironments(6).However,foroutdoorexposures,someconstraintsmayhavetobeputontheamountandtypeofcorrosionproductsallowed,particularlythoseinvolvingmoisturecondensationandthepossiblelossoffilmsduetoflaking(alsosee4.9and8.3.2).Inlaboratoryenvironmentaltesting,thecoulometric-reductionprocedureisofgreatestutilityafterrepeatedcharacterizationsofagivencorrosiveenvironmenthavebeenmadetoestablishacharacteristicreductioncurveforthatenvironment.Thesemultiplerunsshouldcomefromboththeuseofmultiplespecimenswithinagiventestexposureaswellasfromseveralconsecutivetestrunswiththesametestconditions.Thecoulometric-reductionprocedureisdestructiveinthatthetarnishfilmsaretransformedduringtheelectrochemicalreductionprocess.Nondestructiveev.........
【中国标准分类号】:H21
【国际标准分类号】:25_220_01
【页数】:8P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 煤中碱金属（钾、纳）含量分级 |
| 发布日期： | 2009-01-01 |
| 实施日期： | 2008-11-19 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
适用范围
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前言
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所属分类： 矿业 固体燃料矿 煤炭分析方法
