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1、Availableonlineatwww．sciencedirect．comTransaefionsof嗨：ScienceDirectNonferrousMetalsSocietyofChinaPressTrans．NonferrousMet．Soc．China24(2014)1452—1457WWW．mmSC．CnAnovelwet—chemicalmethodforpreparationofsilverflakesAi-xiaZHAI，Xiong—hniCAIz，BinDU1．SchoolofChemicalandEnvironmentalEngineering，Wuh
2、anPolytechnicUniversity,Wuhan430023，China；2．SchoolofBiologicandPharmaceuticalEngineering，WuhanPolytechnicUniversity,Wuhan430023，China；3．ChinaNationalApparatusResearchInstitute，Guangzhou510300，ChinaReceived27May2013；accepted29September2013Abstract：Anove1wet．chemicalme~odforthepreparationofs
3、ilverflakeswasstudied．Thewell—definedparticleswerepreparedbydirectlyaddingFeSO4solutionintoAgNOsolutioncontainingcitricacidatanagitationspeedofl50r／rainatroomtemperature．Theproductswerecharacterizedbyscanningelectronmicroscopy(SEM)andX—raydifraction(XRD)．Theresultsshowthatparticlesareirreg
4、ularthinsilverflakes．Andthesizesofthemrangefrom2to10山n．Itisfoundthatcitricacidplaysanimportantroleint11eformationofsliverflakes．Thereisanoptimumamountofcitricacidforthepreparationofsilverflakesbythismethod．Itisalsofoundthathighreductionrateisfavorablefortheformationofsilverflakes．Keywords：
5、silverflake；wet．chemicalmethod；FeSo4·7H2O；citricacidpresenceofammonia．ThelateraldimensionofthesilverlIntrOductjOnsheetswasupto15gin．AndLIANGeta1『21]synthesizedsilverflakesbyreducingthetollenreagentTheultrafinemetallicpowdersareusedextensivelywithhydrogenperoxideunderthecatalysisofin1it，ele
6、ctricity，magnetism，heatandcatalysisareas．chloroplatinicacidinethyleneglyco1．ThesizeoftheAndthesilverpowdershadattractedconsiderablesilverflakescouldreach30gm．Obviously，themethodsattentionduringthepastfewyearsfortheirmanymentionedaboveforthepreparationofmicro．sizedadvantages．suchashighelect
7、ricalandthermalsilverflakesneedtobecarriedoutinathermalprocessconductivity，highinoxidizability，excellentsolderabilityorneedseedstocatalyzeandpromotetheanisotropicandreasonableprice．Amongmanypreparationmethodsgrowthofsilvernucleus．Inourpreviouswork【221，theofsil
