Cu-SiCp(SiO2)復(fù)合材料的制備與性能研究.pdf

1、鄭州大學(xué)碩士學(xué)位論文CuSiCp(SiO2)復(fù)合材料的制備與性能研究姓名：任向前申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：張銳201205AbstractAbstractCu／SiCpcompositescombineboththehighelectric—conductivityofcopperandsuperiorspecificmodulusofSiC，havingbroadapplicationprospectsintheauto

2、motiveindustryelectronicsandadvancedweaponssystemsThecontentofsiliconcarbidereinforcementandthetwophaseinterfaceofsiliconcarbideandcopperhaveanimportantimpactonthepropertyofcompositematerialsAddingreinforcementsiliconcar

3、bideparticlesandthereasonableregulationofthetwophaseinterfaceCangettwo—phasehomogeneousandexcellentperformancecompositematerialsThisarticlefirstlyadopts01geltealizesurfacepreparationofmicronsiliconcarbideviacoatingitwith

4、amorphousnessSi02andthencoatingthesurfaceofprecursorSiCwithCubyreplacementreactionmethodtoprepareCu／SiC(Si02)compositepowdersDifferentialThermalAnalysis(DTA)，X—raydiffraction(XRD)，Zetapotentialinstrument，scanningelectron

5、microscopy(SEM)andotherdetectionmethodswereusedtocharacterizethecompositionandstructureofcompositepowdersVacuumhotpressingmethodwasusedtofabricatesiliconcarbidereinforcedcoppermatrixcompositesSomepropertiessuchascomposit

6、emicrostructure，compositionanddensitywerecharacterizedtoanalysisthepreparationprocessparametersonthestructureandpropertiesofcompositesFinallytheelectricpropertiesofsiliconcarbideparticlereinforcedcoppermatrixcompositeswe

7、remeasured，researchingtheimpactofSi02interfacecontrolonthehightemperatureresistivityofcompositesandanalyzingtheinterracialpropertiesofmaterialsaccordingtotheeffectofspacechargeExperimentalresultsshowthat：theuseofsolgelme

8、thodcouldcoatsurfaceofSiCparticleswithalayerofamorphousSi02Thereactionsystemratio，temperatureandpHofthereactionsystemhaveimpactontheeffectofcoatingChemicalreplacementreactionwascarriedouttopreparecompositepowdersofCucoat