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1、CorrosionScience75(2013)309–317ContentslistsavailableatSciVerseScienceDirectCorrosionSciencejournalhomepage:www.elsevier.com/locate/corsciComparisonbetweentheoxidationofironinoxygenandinsteamat650–750°CJuntaoYuan,WenWang⇑,ShenglongZhu,FuhuiWangStateKeyLab
2、oratoryforCorrosionandProtection,InstituteofMetalResearch,ChineseAcademyofSciences,62WencuiRoad,Shenyang110016,PRChinaarticleinfoabstractArticlehistory:Oxidationofironwasinvestigatedinoxygenandinsteamat650–750°CbyTGA,OM,SEM,andXRD.InReceived5February2013o
3、xygen,parabolickineticsandmultilayeroxidescalescomposedoftypicalthreeironoxideswereAccepted10June2013observed.Noticeably,thescaleadhesionwasverypoor.Insteam,linear-parabolicshapekineticsandAvailableonline18June2013multilayeroxidescaleswithfewerporeswerefo
4、und.AsindicatedbyPtmarking,inward-growingpro-cessinsteamwasconsideredtoresultintheimprovementofscalecontact.BasedontheexperimentalKeywords:results,scalingmechanismofironinsteamwasdiscussed.A.IronÓ2013ElsevierLtd.Allrightsreserved.B.SEMB.XRDC.Hightemperatu
5、recorrosionC.Oxidation1.Introductionopentodebate,andmucheffortisexpectedtoputforwardonthefundamentalstudiesincludingoxidationofpuremetalsandSteamoxidationhasbeenbecomingamoreconcerningprob-oxidepropertiesinpuresteamwith/withoutpressure.lemforalloyswithpot
6、entialforuseaspartsinsteamboilers,espe-Asthebaseelementiniron-basedalloys,oxidationofironhasciallyassteamparametersincludingtemperatureandpressurebeenwidelystudiedinairoroxygenasreviewedbyChenandYuenincreaseyearbyyeartoimprovethethermalefficiency.Nowadays,
7、[7],whileonlyafewpapersinvestigatedtheeffectofwatervapouriron-basedalloysarestillfavourablematerialsinthisapplication[8–13].Someoftheseresultshavebeenreviewedin[14].Theduetotheirrelativelylowercost,betterweldability,andhigheracceleratedoxidationbytheaddit
8、ionofwatervapourwasob-heatconductivitycomparedtonickel-basedalloys.Towellunder-servedatawidetemperaturerange(400–600°Cand850–standtheoxidationmechanismandfurtherprovideeffectivepro-950°C).However,theadditionofwaterv
