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1、JMaterSci:MaterElectron(2007)18:817821DOI10.1007/s10854-007-9257-xThermalbehaviorofcopperpowderpreparedbyhydrothermaltreatmentWenchengHu?LinZhu?DongDong?WeiHe?XianzhongTang?XiaoboLiuReceived:21August2006/Accepted:1March2007/Publishedonline:3April2007óSpringer
2、Science+BusinessMedia,LLC2007AbstractCopperpowderissynthesizedbyhydrothermalpropertiesofhighcapacitancewithsmallsize,highreli-treatmentusingthecopperpowderobtainedfromtheability,andexcellenthigh-frequencycharacteristics[13].chemicalreductionmethodasaprecursor
3、.ThecopperConsideringthemarketpriceofMLCCs,copperpowderispowderisalsotreatedinbenzotriazolesolution.ThenowemployedmorefrequentlythesedaysinMLCCpowderX-raydiffractionpatternsandSEMphotomicro-insteadofusinganoblemetalsuchasgold,silver,orgraphsexhibitthatthecopp
4、erpowderpossessesperfectpalladiuminordertoformaninternalelectrode.Thisiscrystallinityandnarrowsizedistribution.Thethermalbecausecopperpossessesexcellentpropertiessuchashighbehaviorofthethreekindsofcopperpowderisevaluatedconductivityandresistanceagainstmigrati
5、on,anditisbythermogravimetryandderivativethermogravimetry.availableatarelativelylowcost[48].Generally,copperComparingwiththesamplepreparedbymeansofthepowderwiththecharacteristicsofhighpurity,goodchemicalreductionmethod,thecopperpowdertreatedcrystallinity,non-
6、agglomerateduniformshape,andnarrowunderhydrothermalconditiondisplaysapeaktemperaturesizedistributionshouldbeconsidered[9].oftheformationofCu2Oshiftingfrom60.49°CtohigherTheliquid-phasereductiontechnologyistheconven-temperatures,whichindicatesthatithasstrongan
7、tioxida-tionalmethodtoproducecopperpowder.Itsroutestionperformance.However,theantioxidationeffectofessentiallyinvolvetheprecipitationofmetallicCuthroughcopperpowdertreatedinbenzotriazolesolutionshowsonlythechemicalreductionofsalt,oxide,orthehydroxideofalittle
8、improvementathightemperaturecopperinsolution,andthereducingagentscommonlyusedincludehydrogen[10],hydrazine[11],sodiumborohydride[12],formaldehyde[13],sodiumhypophosphite[14],andcarbohydra
