Immobilization of actinide wastes in ceramics for long-term disposal [Elektronische Ressource] / vorgelegt von Khin Soe Soe

Informations

• Publié par: rheinisch-westfalischen_technischen_hochschule_-rwth-_aachen
• Publié le: 01 janvier 2006
• Nombre de lectures: 22
• Langue: English
• Poids de l'ouvrage: 9 Mo

Extrait

KhinImmobilizationmofDr.actinideInw,astesDr.inMceramicsonlineforelong-termhdispOdoosalConradtVPronDissertationdercFugbar)akulteatYfanmarUniv.-urnat.GeoressourcenUniv.-undnat.Materialtecaghnikundlicderufung:Rheinisc2006h-WaufestfderalischhenerfTMScecSohniscSohenausHoangoncMyhscBerichter:uleProf.Aacrer.henReinhardzurjErlangungProf.desrer.akReinhardademiscThenderGradeseineshenDoktorsder09.Naturwissenscarzhaften(DiesegenehmigteistDissertationdenvternetseitenorgelegtHovhsconulbibliothekdervKernphysikerinXRD
BET
.6ceramic1.Intentrooduction.7.1.1.Rolebof.n.uclear.energymaterials.......titanate.preparation.............................39.....F.......state...Glycerol7.1.22.1.4Curren.t.managemen.t.of.n47uclear.spproen.tdologiesfuel.cycleso.....tial...solid.of.......y...durabilit.forms..7metho1.2.1forA.ctinides,.ssion2.1.1pro.ducts.and.radioto.xicit.y....................46......7.1.2.2CompactionP.artitioning-transm.utation.forofactinides....47.........of.....2.5.1.d.....eller..8.1.3.Disp.osal.oroftransm.utation1.ceramics.............Chemical.zirconolite.....1.6.2.of.w.....2.c.45.metho.ceramic...........metho12.1.3.1.T.ransm.utation.straget.y..2.1.2.ds.............46.d...............metho.............Calcinations12.1.3.2.T.ransm.utation.tec.hnology....47.the.o...........Sin.ceramic...........Sin............13.1.3.32.5Conditioningtheforodeep.geological.disp.osal....y.diraction.Abstract.........2.5.2.........2.5.3.analysis18.1.3.4.Stabilit.y.of.the2.6matrixcrystalline.......erties.zirconia...........................1.6.1.durabilit.of.and.ceramics....19.1.439CeramicsChemical.y.zirconium.earing.aste.........40.General.and.haracterization.ds.2.1.abrication.ds.the.p.wders.................45.Sol-gel.d..............22.1.4.1.Prop.erties.of.ceramics....46.Solid.metho.............................2.1.3.metho..........22.1.4.2.Irradiation.damages.on.ceramics........46.Co-precipitation.d.........................2.2..27.1.4.3.Dieren.t.ceramic.comp.ounds.for.w.aste.immobilization..............2.331of1.5nanoZirconiumpowderxides....................2.4.tering.nano.solid.....................2.4.1.tering.cesses............32.1.5.1.F.ully.stabilized.zirconia.(or).cubic48zirconiaMetho.for.analysis.p.wder...................4936X-ra1.5.2pPhasewderstabilitmethoy(oftscubic)zirconia..............495Brunauer-Emmett-TAbstract(Conmetho.).d...............50.Dieren.thermal..36.1.5.3.Sim.ulations.elemen.ts.for.incorp.oration.in.cubic51zirconiaCharacterizations.nano.ceramic.materials........39511.6PropXRD
X
SEM=EDX
XRD
o(Zr Y )O 110 C0:84 0:16 x
o(Zr Y )O 600 C0:84 0:16 x
o1;100 C
TG=DSC
(Zr;Y;Ce )O XRDa x
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(Zr;Y;Ce )Oa x
(Zr Y )O1¡x x 2¡0:5x
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(Zr;Y;Ce)Ox
(Zr;Y;Ce)Ox
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o600 C
(Zr;Y;Ce)Ox
(Zr;Y;Ce)Ox
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(Zr;Y;Ce )Oa x
(Zr;Y;Ce)Ox
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(Zr;Y;Ce)Ox
o110 C
.b.eha.vior.ofsamplesceramic.ceria131ofhingyinstabilitconphasetanddriedformation.Structure5.1.14.5.4.78c.v...c.after..matrixop.ellets.under.static.conditions.in.ultra.pureofwtainingater..4.6.11.ceramic.......ellets.p.....Phase.with.the...wt...erties...ceria...Results.p84.4.6.2.Leac.hing.b.eha99viortofof.for.dynamic.....from...20.test.....Characterizationceramichingp.ellets.withleac5%wt%atceriaexp85.4.6.3.Leac.hing.busingeha79viorceriaof..erimen.Phase...p.from..estigation.v119in.Microhardness.4.5.3.ceramic121p.ellets.with.105wt%matrixceriaofunder.static.condition....................The.con.the.eha...ceramics.prop.ellets..........88hing4.6.4ofLeac4.6hing.belletseha%viourleacof.76........105.leactsthetenerimencon.ceria4.7.1tofceramicppe-elletspwith1010preparedwt%wderceriaerimenmadeleacfromtp.o.wder.dried.at.dieren.with.matrix107.y.the.Microstructural...wt.from.calcined...hing...108.y.......with88ceria4.6.5oLeac.hing.b.eha.viour.ofChemicalthe.of.y.Compressibilit.4.5.2.75....Conclusions......ceramic.p.ellets.with.10erimenwtyttria-stabilized%neoceriaSynmadedymiafromwderp.o.wder.calcined.at..and................................91.4.6.64.6.10Calcinationeecttempceriaeratureteneectoninleacthebleacviourhing82bceriaehaconviourtheoferties.hemical.p.under.test-conditions..............ceramics.with10310Leacwtresults%theceriaestigation.In.80.....p.with.wt.ceria.dynamic.hing.......................4.795of4.6.7hedTheaftereectleacofexpdensitty.in.leac107hingMicrostructurebhangeseha.viourelletsofp.b.fore.hing.ellets.taining.wt.ceria.from.o.calcined.expceramicstwiththe10hingwt%erimenceria................................4.7.2.stabilit.of...of.assessmen.4.5.54.6.1.hingpelletsleac10.%.made.p.wder.at..4.8afteronleacceramicsexp.t.....4.7.3.stabilit.of...........ceramic.ellets4.8.110ysical%ertiesmade.p.wder.atLeac..after.hing........97.4.6.8110TheDiscussioneectceriaof.fabrication.pro.cess.on.the.leac.hing.b.eha.vior.of.eratures.temp119calcinationPhtpropdieren.at.pressure.with.matrix.the.of.ceramic.p.ellets.with.25.wt%.ceria.prepared4.8.2frompropp.o.wder.calcined.at.y.Compressibilit.4.5.1...131..........4.9.on.ceramics.........................125.Exp.tal.for.zirconia.with.dymia.5.1.thesis.neo.ceramic.o98.4.6.9.The.eect.of.ceria.con.ten.t.on.the131leacDryinghingcalcinationb.eha.viour.of.the.p.ellets.under.static.conditions.......3.BET
(Zr;Y;Nd )O XRDa x
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t...159.Moun.....hing.ater.........ellets...........Characterization132.5.2.1.Single.phaseertiesp.o163wders............172.......185.........prop.......161.........of.leac..132ater5.2.2.Double.phase5.6.3p.o.wders..hing.......yttria-stabilized...ersp.........c.Vitae...155.crystallinit...........Mec......135.5.2.3.Characterization.of.p.oChemicalwder.b.y............Leac.dymia.dieren.media...5.6.2.ultra-pure.............hing.erri-w139.5.2.4.Characterization.of.p.o5.6.4wdersgranitic.............Conclusionsgrindingwithduringdymiaeect.hemical5.8cesb.y.the.and.Grinding........184.wledgemen.187.4..141.5.3.Prop5.4.3ertiesofofyceramics.con.taining.neo.dymia............5.5.hanical.erties..................147.5.3.1.Green.densit.y.and.compressibilit5.6ypropof.ceramics.con.taining.neo.dymia.147.5.3.2.Sin.terabilit.y.of.yttria-stabilized.zirconia.matrix.with.neo5.6.1dymiahing.neo.p.in148t5.3.3hingSin.tered.densit.y164andLeactheininitialwprop.erties.of.ceramic.p.o.wder.........1511645.4LeacCharacterizationinoft-Tsynaterthesized.p.ellets.b.efore.leac.hing........168.Leac.in.w..........155.5.4.1.Preparation.steps.b.efore.the.leac5.7hingforexpzirconiaerimendierentneo.......178.P.ectiv........155.5.4.2.Microstructure.assessmen.t.of.5.1.2.wder.o.p.thesized.syn.the.of.CharacterizationA5.2kno131tspReferenceselletsCurriculum.201..6MeV 10
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BET
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pH
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