OALib Journal期刊
CeO2改性的渗铬涂层及氧化性能研究
, PP. 63-68
Keywords: 电沉积 ,渗铬 ,氧化
Abstract:
采用在低碳钢上复合电镀NiCeO2后1120℃扩散渗铬4小时的方法，制备了CeO2改性的渗铬涂层，涂层主体由CeO2弥散分布的外层和不含CeO2的内层组成.作为对比，用相同工艺在低碳钢及单镍镀层上直接渗铬，获得2种不含CeO2的渗铬涂层；840℃下120小时的循环氧化实验表明，CeO2改性的渗铬涂层与不含CeO2的比较，抗氧化性能明显提高.光学显微镜(OM）、X光衍射（XRD）、扫描电镜与能谱（SEM/EDAX）及电子探针（EPMA）分析结果表明，CeO2改性的渗铬涂层抗氧化性能的提高，在于渗铬涂层中弥散的CeO2颗粒参与了Cr2O3的生长过程.文中对CeO2影响渗铬涂层的显微组织及氧化的作用机制进行了探讨.
References
[1] MTKim,NHHeo,JHShinetal.Simultaneouschromizingandaluminizingusingchromiumoxideandaluminum:(I)onlowalloysteel[J],SurfaceCoatingsTechnology,2000,123:227. [2] DoYonChang,SangYulLee,SungGoonKang.Effectofplasmanitridingonthesurfacepropertiesofthechromiumdif fusioncoatinglayeriniron basealloys[J],SurfaceCoatingsTechnology,1999,116-119:391. [3] RGILeferink,WMHuijbregts.Chromiumdiffusioncoatingsfortheprotectionoflow alloysteelinasulphidizingatmo sphere[J],CorrosionScience,1993,35(5-8):1235. [4] FrederickDGeib,RobertARapp.Simultaneouschromizing aluminizingcoatingoflow alloysteelsbyahalide activatedpack cementation process[J],OxidationofMetals,1993,40(3/4):213. [5] StriagerJ,Mater.Thereactiveelementeffectinhigh tempera ture[J],corrosionSci.Eng.,1989,A120:129. [6] MoonDP .Roleofreactiveelementsinalloyprotection[J],Mater.Sci.Technol.,1989,5:754. [7] LangE .TheRoleofActiveElementsintheOxidationBe haviourofHighTemperatureMetalsandAlloys[M ].London:ElsevierAppliedScience,1989. [8] PYHou,JStringer.Influenceofion implantedyttriumontheselectiveoxidationselectiveofchromiuminCo25wt.%Cr[J],Oxid.Met.1988,29:45 [9] DPMoon.Lmis simsstudiesofoxidescales[J],Surf.Inter faceAnal.1988,12:27. [10] JMHampikian,OFDevereux,DIPotter.Effectofion im plantedyttriumontheoxidationofnickel[J],Mater.Sci.Eng.1989,A116:119. [11] kMitra,SKRoy,SKBose.InfluenceofsuperficialcoatingofCeO2 ontheoxidationbehaviorofAISI 304stainlesssteel[J],Oxid.Met,1992,39:221 [12] FCzerwinski,WWSmeltzer.Surfaceanalysisofnickel oxidefilmsmodifiedbyareactiveelement[J],Oxid.Met,1995,43:25. [13] JKipkemoi,DTsipas.Rare esrthmodifiedchromium alu minidecoatingsappliedbypackcementationmethodonlow al loysteels[J],JournalofMaterialsScience,1996,31:6247. [14] TianchengZhang,DYLi.Effectsofyttriumoncorrosiveero sionanddrysanderosionofFeAlCr(Y)diffusioncoatingson1030steel[J],MaterialsScienceandEngineering,2000,A277:18. [15] SKGupta,SRAdolph,LCTandonetal.Experimentalandtheoreticalandtheoreticalconcentrationprofilesatthesurfaceofchromizediron[J],Met.Trans.1982,13A :495. [16] CCheng,GHMeier,RAPerkins,etal,Materialsforcoalgas fication[A].WTBakker.MetalsPark[M ].OH ,ASMInter national,1988,159. [17] CMCotekk,GJYurek,RJHusseyetal.Theinfluenceofgrain boundarysegregationofYinCr2O3ontheoxidationofCrmetal[J],Oxid.Met.1990,34:173.P
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