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熔盐堆用超细颗粒石墨结构和熔盐浸渗研究（英文）.docx

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熔盐堆用超细颗粒石墨结构和熔盐浸渗研究（英文） ResearchonUltrafineParticleGraphiteStructureandMoltenSaltImmersioninMoltenSaltReactors Abstract: Moltensaltreactors(MSRs)havegainedsignificantattentionasapotentialsolutionforsafe,sustainable,andefficientnuclearpowergeneration.OneofthekeycomponentsinMSRsisthegraphitestructure,whichplaysavitalroleinmoderatingneutronsandmaintainingthestabilityofthereactor.ThisstudyfocusesontheuseofultrafineparticlegraphitestructuresandmoltensaltimmersioninMSRs.TheobjectiveofthisresearchistoinvestigatetheperformanceofultrafineparticlegraphitestructuresandevaluatetheeffectivenessofmoltensaltimmersioninenhancingthethermalconductivityandoverallperformanceofMSRs. 1.Introduction Moltensaltreactors(MSRs)utilizeliquidfluoridesaltsasbothcoolantandfuel.Theexceptionalheattransferandinherentsafetypropertiesofmoltensaltsmakethemanattractivechoicefornext-generationnuclearpowersystems.TheperformanceofMSRsheavilyreliesonthedesignandstructureofthegraphitecomponentswithinthereactor.GraphiteactsasaneutronmoderatorandprovidesstructuralstabilityinMSRs.ThisresearchaimstoexplorethepotentialbenefitsofusingultrafineparticlegraphitestructuresandmoltensaltimmersioninMSRs. 2.UltrafineParticleGraphiteStructures Ultrafineparticlegraphitestructuresarecharacterizedbytheirhighsurfacearea,smallparticlesize,anduniquephysicalproperties.Thesestructuresofferseveraladvantagesoverconventionalgraphitematerials,includingincreasedthermalconductivityandimprovedmechanicalstrength.Theultrafineparticlesprovidealargeractivesurfacearea,whichenhancestheheattransfercapabilityandfacilitatesefficientneutronmoderation. 3.FabricationandCharacterization Thefabricationofultrafineparticlegraphitestructuresinvolvesvariousmethodssuchasballmilling,chemicalvapordeposition,andsparkplasmasintering.Theresultingstructuresarecharacterizedusingtechniqueslikescanningelectronmicroscopy,X-raydiffraction,andthermalconductivitymeasurements.Thesecharacterizationtechniqueshelpevaluatethemorphology,crystalstructure,andthermalpropertieso