粉煤灰表面形貌和组成的电子显微镜能量色散谱、聚焦离子束分析

3220049(FENXIHUAXUE)ChineseJournalofAnalyticalChemistry911961198/1312311(,523106)2(,411105)3(,130022)(FE2SEM),/(SEM/EDS)(FIB),FIB0.30.5m;FE2SEM88%0.31m,,,20.5%23.6%1.4%50.9%,,/2003209201;2004201205(No.2003A3060302)(No.02084)1,,,,,65%1,80%4,2,3,5,,,,,,(FE2SEM)/(SEM/EDS)(FIB)22.1S25200(),JSM26301/(JOEL/Oxford);FEI2200(THP)A2.2/:,,,,3nmPt:,,33.1//::20kV,:15mm1/1,SiAlOCuZnMgTiCFeKNa11,,1Table1CompositionofelementsatthesurfaceofflyashElementsSiAlFeCaMgTiZnCuKNaO(%)Massratioinpercent23.620.51.430.400.120.370.690.851.000.2050.93.21EDSFig.1Energtydispersespectrum(EDS)offlyashsurface::30kV;:2.2A;:10pA2(a),,400500nm,610::2.0kV;:-0.2mm;:35002(b),,0.35m,,0.10.5m65%,0.61.0m23%,1.52.5m9%,2.5m3%2FIB(a)FE2SEM(b)Fig.2Imageoftheflyashbyfocusedionbeam(FIB)method(a)andimageoftheflyashbyfieldemissionscanningelectronmicroscope(FE2SEM)(b)3.33(a)FE2SEM,30000;3(b)FE2SEM,600003(c)FE2SEM,1300003,,,,,,,10nm,79119:/3FE2SEMFig.3ImagesoftheflyashbyFE2SEMReferences1Mazongqing().ElectricPowerConstruction(),2001,22(3):43462GuoHaijun(),TanGuanghe().EnvironmentalProtectioninMetallurgicalIndustry(),2001,(3):41453ZhongshanUnionHongxingpaper2makingCo.Let.(),ChinesePatent(),1265378,20004TankdaT,HashimotoI,TsutsumiK,ShibataY,YamamuroS,KamadeT.ResourcesconservationandRecycling,1995,14(2):69735RuanXiangyuan(),LiJiu(),HuangXiaoling().TechniquesandEquipmentforEnvironmentalPollutionControl(),2001,2(1):3843StudyonBothShapeandChemicalCompositionattheSurfaceofFlyAshbyScanningElectronMicroscope,FocusedIonBeam,andFieldEmission2ScanningElectronMicroscopePengMin1,RuanXiangyuan31,ChenXiaoming2,XuJingwei3,JiangZhicheng11(DepartmentofAppliedChemistry,DongguanUniversityofTechnology,Dongguan523106)2(CollegeofChemistry,XiangtanUniversity,Xiangtan411105)3(NationalResearchandAnalyticalCenterofElectrochemistryandSpectroscopy,ChangchunInstituteofAppliedChemistry,ChineseAcademyofSciences,Changchun130022)AbstractMicro2appearanceandchemicalcompositionatthesurfaceofflyashcollectedfromShaZhouPowerSta2tionofGuangdongweremeasuredwithfieldemission2scanningelectronmicroscope(FE2SEM),scanningelectronmicroscope/energydispersespectrum(SEM/EDS)andfocusedIonbeam(FIB)inthispaper.InFIB,itshowsthattheflyasharesphericalparticleswithdiameterfrom0.3mto0.5mandgathertogethertobecomelargergroupby610particles.ImagesofFE2SEMshowthatmostoftheflyasharesphericalparticleswithdiameterof0.11mandveryroughatthesurfacecoheredwithmuchsmallersphericalparticles.ThesurfaceiscomposedofoxidesofSi,Al,Fe,Ca,Mg,Cu,Zn,andTi,with23.6%Si,20.5%Al,1143%Feand50.9%O.KeywordsSurfaceanalysis,flyash,scanningelectronmicroscopewithenergydispersespectrum(Received1September2003;accepted5January2004)891132