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1、Proceedingsofthe3rdIEEEInt.Conf.onNano/MicroEngineeredandMolecularSystemsJanuary6-9,2008,Sanya,ChinaTheResistivityOfANewCompositeSystem:CNT-Ceramic1,2*1,2233JingWang,JiahuGuo,YafeiZhang,YubaiPanandJingkunGuo1DepartmentofMaterialScienceandEngineering,A
2、nhuiUniversityofScienceandTechnology,China2ResearchInstituteofMicro&NanoScienceandTechnology,ShanghaiJiaoTongUniversity,China3ShanghaiInstituteofCeramics,ChineseAcademyofScience,ChinaAbstract—Wepresentthefirstelectricalresistivitypropertyofawiththeric
3、hnessandflexibilityofothercarbonmolecules.newcompositesystem:CNT-ceramiccomposites.CarbonCarbonisthebasisofmostmaterialsweuseeveryday;e)nanotube-mullitecompositesCNT/mullite=1~15vol.%Molecularperfection--essentiallyfreeofdefects;f)Self-werepreparedb
4、yhot-pressingthecorrespondingcompositeassembly--strongvanderWaalsattractionleadstopowders.Theelectricalresistivityofthecompositeswasspontaneousropingofmanynanotubes.[2]decreasedremarkblybyaddingaverysmallamountofCNTinrelationtotheuniquespecialitiesoft
5、hecarbonnanotubes.WithTherefore,carbonnanotubes,eithersingle-walled(SWNT)theintroductionof10vol.%pretreatedCNT,theelectricalormulti-walled(MWNT),shouldbeidealreinforcingfibersforresistivityisdecreasedby9ordersofmagnitude.Thesurfacecomposites.Thespecia
6、lnatureofcarboncombineswiththefunctionalisedCNTarecrucialforthissignificantdecreaseinmolecularperfectionofSWNTtoendowthemwithelectricalresistivity,whichprovidesstrongadhesionbetweentheexceptionallyhighmaterialpropertiessuchasstrength,nanotubesandthema
7、trixtogiveahomogeneouscarbonstiffnessandflexibility,aswellaselectricalandthermalnanotube-ceramiccomposite.conductivity[1,4].ButSWNTistooexpensiveforgeneralresearchsotheMWNTisusuallyusedincomposites.Keywords-resistivity;CNT;ceramic;composites;electrica
8、lresistivityAttemptshavebeenmadetodevelopadvancedengineeringmaterialswithimprovedornovelpropertiesthroughtheincorporationofcarbonnanotubesinselectedmatricesI.INTRODUCTION(polymers[5-8],metals[9]andceramics[10-14]).MostoftheNowadaysCarbonnanotu
