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ProgressinResearchofChromate2freePassivationofZincandZincAlloyGalvanizedSteel,,(,650093)YANLei,ZHANGYing2jie,FANYu2ying(KunmingUniversityofScienceandTechnology,Kunming650093,China):;,:,,;,:;;Abstract:Progressofchromate2freepassivationofzincorzincalloygalvanizedsteelissummarized,focusingonseveralchromate2freepassivationprocessesofzincplatedsteelbyinorganicandorganicagents.Thedevelopingtendencyofchromate2freepassivationtechniquesisovercasted.Itisalsopointedthatsilicatepassivationfilmwillbeoneofthemainresearchingobjects,whichwillreplacecurrenttraditionalchromatepassivationbecauseitisnon2toxicandenvironment2friendly,highlycorrosionresistantandlowerincost.Keywords:galvanizedsteel;zincalloy;chromate2freepassivation:TG174:A:100024742(2007)0520001205,,,,,,,,,1VIA,[1]Loughborough[2];:,Tang[324]P,[5],2.99.8gPL,()pH0.051.00m,KurosawaK[6]0.1molPL(pH),93(JISZ2371),10[7]A3:35nm,Mo3+Mo6+,MoO3Mo(OH)3Zn(OH)2ZnOZnMo2O4;Mo3+,Mo2O3Mo(OH)3ZnOZnMo2O4MoO2-4,,[8],:525gPL,,pH25,3070,1060s,[9],,-,,,,Wharton[10]:,,[11],120079275(157):,,Tafel:[12],:,,,,,,,Cl-;,,,,2[13]BaskerVeeraraghavan[14],,:;Si,MotoakiHara[15]Ti(SO4)2,CoSO4:(1);(2),SandrineDalbin[16],SiO2:SiO2,MontemorMF[17](Zr(NO3)4+):,Si,Si;SiWolfgangEGHansal[18],,:;,TrabelsiW[19]Ce(NO3)3Zr(NO3)4;CeZr,,:CeZr,,CeLa[20],LaCe,:(1)Ce;(2)La,Ce[21]:ZnS;,SiO2-3SiO2Zn2+[22],,,23m,SiO2/:SiO2,,[23],:,,,2Sep.2007Electroplating&PollutionControlVol.27No.5,,,3HintonB.R.W[24]CeCl3,0.1molPLNaCl,:,,,:,MontemorM.F[25]Ce(NO3)3,:Ce3+Ce6+Ce3+Ce6+Ce3+():,[26]ArenasM.A[27]SEMEDS:Ce(OH)3Ce2O3H2O,4YasuyukiKobayashi[28]XSO2-4:SO2-4,SO2-4,[29]H2O260mLPL,(50%Ce28%La8.7%Pr13.3%Nd)80gPL,30,pH4.0,60s,,:Zn2+,H2O2[30],,,;,10,,,CeO2Ce2O3ZnO;[31],,4[32]:TiCl38gPL,H2O2812mLPL,HNO335mLPL,1015mLPL,48gPL;:2540C,pH2.73.5,4560s,,5:,,,;:,,,[33]:(1)40gPL,20gPL,HNO35mLPL,5070;(2)0.1%20%,,;(3)[34],,,[35]WippermannK[36],BAT4BTAHT:AHT,BAT4,XPS:3nm(Zn-BAT4),320079275(157),12Zn-,[37],:Na2MoO4;,;Na2MoO4,[38],,[39],(NSS),:,;(MoO2-4PO3-4);,,,6,,,,,,,,,,:[1]VukasovichMS,FarrJPG.MolybdateinCorrosionInhibition-AReview[J].MaterialsPerformance,1986,25(5):9-15.[2]WilcoxGD,GadeDR.ChemicalMolybdateConversionTreatmentsforZinc[J].MetFin,1998,86(9):71.[3]TangPT,BechNielsenG,MoilerPM.MolybdateBasedAlternativestoChromatingasaPassivationTreatmentforZinc[J].Plat&SurfFin,1994,81(11):20.[4]TangPT,BechNielsenG,MoilerPM.MolybdateBasedPassivationofZinc[J].TransIMF,1997,75(4):144.[5]BechNielsenG,TangPT.AMethodforPost2treatmentofanArticlewithaMetallicSurfaceasWellasaTreatmentSolutiontobeUsedintheMethod:WO,9310278[P],1993-05-27.[6]KurosawaK,FukushimaT.EffectofpHofanNa2MoO42H3PO4TypeAqueousSolutionontheFormationofChemicalConversionCoatingsonSteels[J].CorrosSci,1989,29(9):1103.[7],,,.A3[J].,2006,20(4):427-430.[8],,,.Zn[J].,2001,13(1):46.[9],,.2[J].,2005,17(3):184-186.[10]WhartonJA,WilcoxGD,BaldwinKR.Non2ChromateConversionCoatingTreatmentsforElectrodepositedZinc2NickelAlloys[J].TransIMF,1996,74(6):210.[11],,.[J].,2006,39(10):23-25.[12],.[J].,2002,22(6):17-19.[13],,.[J].,2003,32(2):6-8.[14]BaskerVeeraraghavan,DraganSlavkov,SwaminathaPrabhu,etal.SynthesisandCharacterizationofaNovelNon2ChromeElectrolyticSurfaceTreatmentProcesstoProtectZincCoatings[J].SurfaceandCoatingsTechnology,2003,167(1):41-51.[15]MotoakiHara,RyoichiIchino,MasazumiOkedo,etal.CorrosionProtectionPropertyofColloidalSilicateFilmonGalvanizedSteel[J].SurfaceandCoatingsTechnology,2003,(169-170):679-681.[16]SandrineDalbin,GeorgesMautin,RicardoPNogueira,etal.Silica2BasedCoatingforCorrosionProtectionofElectrogalvanizedSteel[J].SurfaceandCoatingsTechnology,2005,194(2-3):363-371.[17]MontemorMF,SimÈesAM,FerreiraMGS,etal.TheCorrosionPerformanceofOrganosilaneBasedPretreatmentsforCoatingsonGalvanizedSteel[J].ProgressinOrganicCoatings,2000,38(1):17-26.[18]WolfgangEGHansal,SelmaHansal,MatthiasPÊlzler,etal.InvestigationofPolysiloxaneCoatingsasCorrosionInhibitorsofZincSurfaces[J].SurfaceandCoatingsTechnology,2006,200(9):3056-3063.[19]TrabelsiW,TrikiE.TheUseofPretreatmentsBasedonDopedSilaneSolutionsforImprovedCorrosionResistanceofGalvanizedSteel4Sep.2007Electroplating&PollutionControlVol.27No.5Substrates[J].SurfaceandCoatingsTechnology,2006,200(14-15):4240-4250.[20]MontemorWF,TrabelsiW,ZheludevichM,etal.ModificationofBis2silaneSolutionswithRare2EarthCationsforImprovedCorrosionProtectionofGalvanizedSteelSubstrates[J].ProgressinOrganicCoatings,2006,57(1):67-77.[21],,.[J].,1997,9(2):167-170.[22],.P[J].,2005,38(1):17-19.[23],,.[J].,2004,33(6):18-20.[24]HintonBRW,WilsonL.TheCorrosionInhibitionofZincwithCerousChloride[J].CorrosSci.1989,9(9):967-985.[25]MontemorMF,SimÈesAM,FerreiraMGS.CompositionandBehaviourofCeriumFilmsonGalvanizedSteel[J].ProgressinOrganicCoatings,2001,43(4):274-281.[26]MontemorMF,SimÈesAM,FerreiraMGS.CompositionandCorrosionBehaviourofGalvanizedSteelTreatedwithRare2EarthSalts:TheEffectoftheCation[J].ProgressinOrganicCoatings,2002,44(2):111-120.[27]ArenasMA,DamboreneaJJ.GrowthMechanismsofCeriumLayersonGalvanizedSteel[J].ElectrochimicaActa,2003,48(24):3693-3698.[28]YasuyukeKobayashi,YutakaFujiwara.Ef