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39Vol.39,Suppl.20057AtomicEnergyScienceandTechnologyJuly2005,(,610041):2005201205;:2005203215:(1980),,,,:,Ti25Ta,,Ti25%Ta21.8%Nb,:Ti25Ta;;;;;:TG146141:A:100026931(2005)S020053206ResearchandEvolutionofRefractoryMetalEmployinginSpentFuelReprocessingFacilityXUXiao2xiao,QIUShao2yu(NationalKeyLaboratoryofNuclearFuelandMaterials,NuclearPowerInstituteofChina,Chengdu610041,China)Abstract:Itisreprocessingfacilitymaterialdevelopmentwaythatexploiturerefractorymetalsreplaceextra2low2carbonstainlesssteelasspentfuelreprocessingfacilitymateri2al.Zirconiumalloysdisplayexcellentcorrosionresistanceinreprocessingcondition.Stresscorrosioncrackingofzirconiumalloysinreprocessingconditionisamelioratedthroughalloyingtreatment.Ti25TatitaniumalloyhasexperimentationfunctioninTokaireprocessingplantofJapan,itisbetterinintegrationperformancevalue.Ti25Tatitani2umalloyapplyingtoreprocessinghasthebestforeground.CorrosionperformanceofTi25%Ta21.8%NbtitaniumalloyexploitedbyIndiawasinvestigated.Itindicatesthesupe2riorcorrosionpropertiesofTi25%Ta21.8%Nbtitaniumalloyincomparisontothecon2ventionalstainlesssteelornitricacidgradestainlesssteel.Keywords:Ti25Taalloy;zirconiumalloy;corrosion;extra2low2carbonstainlesssteel;spentfuelreprocessing;nitricacidPurex,,,,,,,,,,,,,Uranus265,WAK27[1],,UP3,Ti2Ta,Ti2TaTi2Ta2Nb1,,,,,,[2],,Cr2W2SiNiRW[3]235U,,,ZrTiNb,,ZrTiNb,,2,ZrZr,,,TakafumiMotooka3mol/LZrNbTi25Ta,Zr,Zr,U.KamachiMudali[4]ZrZircaloy22,ZrZircaloy22Nb(NAG)Uranus216SSNAGUranus265SSTiTi25%TaTi20.25%Pd,ZrZircaloy22SUS304LSUS310ULCUranus265TiZr1850hTi0.25mm/a,Uranus2650.1mm/a,45390.1mm/aSUS304L0.5mm/a,SUS310ULC0.05mm/a,Zr,Zr(SCC)[5],(0001)(TGSCC)[6,7]Ti,,ZrTiZr[810]HirooNaganoZrTiZr,Zr22.5%TiZr215%TiZr,70%(),Zr215%Ti2000mV,ZrTiZrZr215%TiX(XPS),Zr215%TiZr4+Ti4+,Zr215%TiZrO2TiO2ZrO2TiO2,HirooNaganoTaZrZrSCC,TaZr,TaTi[11]3Ti[12]Ti,98%,,Ti,Ti353K,Ti,,(),311Ti,Ti,TaNbK.KiuchiNbTa,10mL/(cm2h)12mol/LHNO3,TiTi25NbTi27NbTi26.5Nb21TaTi26Nb22TaTi25.5Nb23TaTi25Ta()Ti21.8Nb25Ta,TiTiHNO3TaNb,Ta[13]KarenAlvesdeSouza[14]TaTi2Ta,TaTi2Ta()Ta,Ta,Ti210TaTaTi,436K10%70%,0.025mm/a,[15],TaTi2Ta,5%TaTi2TaTi25%Ta2TiTi,55:TaNb,(Ti)K.Kapoor[16]Ti25TaTi25%Ta21.8%Nb1.8%Nb,(1%),Ti25%Ta21.8%Nb+,TiTi,Ti25%Ta21.8%NbTi,Ti25%Ta21.8%NbTaNb,Ti25%Ta21.8%Nb,,,312Ti25TaTakafumiMotookaU.Kam2achiMudaliTi25TaZrNb(NAG)Uranus216NAGUranus265,Ti25Ta,Ti25TaZrNbUranus216NAGUranus265UPuN.Tsuji8mol/LHNO3Cr6+Ru3+120h,Ti25Ta,Zr,Ti25TaCr3+Ru3+U.KamachiMudali[4]NAGUranus216SSNAGUranus265SSTiTi25TaTi20.25%PdZircaloy22TiTi25Ta,Ti25TaZircaloy22,Ti25Ta,,Ti25Ta,,(Cr6+)Ti25Ta,,Ti25Ta,[17]313N.TsujiSUS304LZrZrTi25TaTi25Ta120h,SUS304L0.27mm/a,Ti25Ta30h0.04mm/a,,,120h,Ti25TaZrZr,ZrZrTi25TaTi25Ta,Ti25TaTi25Ta,SUS304LZrTi25Ta,,SUS304L,ZrTi25Ta,,Ti25Ta1500mV314Ti25Ta[18]Ti25Ta40000h[10],Ti25Ta0.1mm/aTi25Ta20000h,0.34mm/a,0.27mm/aSUS304L,11000h2.8mm/aTi25Ta,0.10.3mm/a,,Ti25Ta,Ti25Ta,Ti25Ta6539,315Ti25%Ta21.8%Nb(ASTM)A262CTi25%Ta21.8%NbTi25Ta304L,Ti25%Ta21.8%NbTi25%Ta,304L1Ti25%Ta21.8%Nb304L9mol/LHNO3+1g/LCr6+424h,,Ti25%Ta21.8%Nb3,,,Ti25%Ta21.8%Nb304L(NAG)304L1mol/LHNO3,(),Ti25%Ta21.8%Nb4,,,235U,,ZrTiTi,,TiZr,Zr,Ti2Ta,,,:[1]KiuchiK.CorrosionProblemsandCountermea2surestoCorrosionofReprocessingMaterialsUsedinBoilingNitricAcid:JAERI2Research[R].Japan:JAERI,1998.[2]KiuchiK,HayakawaH,TakagiY,etal.NewAlloyDevelopmentforFuelReprocessingPlantMaterialsUsedinNitricAcidSolutions[A].TheFourthInternationalConferenceonNuclearFuelReprocessingandWasterManagementRECOD94[C].London:BritishNuclearIn2dustyForum,1995.284286.[3]DoiM,KiuchiK,YanoM,etal.ImprovementEffectonCorrosionUnderHeatFluxinNitricAcidSolutionofAnti2IGCStainlessSteelandHighCr2W2SiNiBaseRWAlloy:JAERI2Re2search[R].Japan:JAERI,2001.[4]MudaliUK,DayalRK,GnanamoorthyJB.Cor2rosionStudiesonMaterialsofConstructionforSpentNuclearFuelReprocessingPlantEquip2ment[J].JournalofNuclearMaterials,1993,203:7382.[5]KajimuraH,NaganoH.PassivityandItsBreak2DownonZirconiuminHighTemperatureNitricAcid[J].CorrosionScience,1990,31:261266.[6]KatoC.ProceedingofInternationalSymposiumonPlantAgingandLifePredictionofCorrosionStructures[C].[s.l.]:[s.n.].1995.883886.[7]MotookaT,KiuchiK.CorrosionFatigueBehav2iorofZirconiumWeldmentsinBoilingNitricAcid:JAERI2Research[R].Japan:JAERI,1996.[8]NaganoH,KajimuraH.TheStressCorrosionCrackingPerformanceofPureZirconiumandZir2coniumAlloyinHighlyOxidizingNitricAcid[J].CorrosionScience,1996,38(5):781791.[9]MotookaT,KiuchiK.CorrosionFatigueofRe2fractoryMaterialsinBoilingNitricAcid[J].Ma2terialsTransactions,2002,43(5):12201224.[10]MotookaT,KiuchiK.DifferenceinCorrosionFatigueBehaviorBetweenTi25TaAlloyandZir2coniuminBoilingNitricAcid[J].Corrosion,2002,58(8):703709.[11]NaganoH,KajimuraH.TheStressCorrosionCrackingPerformanceofPureZirconiumandZir275:coniumAlloyinHighlyOxidizingNitricAcid[J].CorrosionScience,1996,38(5):781791.[12]KiuchiK.TheFifthInternationalConferenceonNuclearFuelReprocessingandWasterManage2mentRECOD98[C].[s.l.]:FrenchNuclearSociety,1998.867874.[13]KiuchiK,HayashiM,HayakawaH,etal.Fun2damentalStudyofControllingFactorsonRelia2bilityofFuelReprocessingPlantMaterialsUsed