凝胶注模成型法制备pzt压电陶瓷

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1、江苏大学硕士学位论文ABSTRACTPZTceramicsasafunctionalceramicmaterialcouldconvertmechanicalenergyandelectricalenergytoeachotherarewidelyusedaspiezoelectricceramicmaterials．Gelcastingasanovelin—situsolidificationmoldingmethodcouldobtainthehighdensity，highstrength，gooduniformityofcomplexsha

2、pedgreenbody．Becauseallaspectsoftheadvantages，themoldingtechnologyhasbeenobtainedsuccessfulapplicationanddevelopmentinthepreparationofstructuralceramics．Butitisrarelyreportedintheapplicationofpiezoelectricceramic．Nowthecomplexitydemandforthepiezoelectricceramicproductshapeishi

3、gherandhigher．Sogelcastingbeingappliedtothepiezoelectricceramicpreparationhasimportantsignificance．Thispaper。studiestherelatedtechnologiesofpreparingPZTceramicsbygelcasting．WefirstdiscussedthepHvalue，stirringtime，amountofdispersingagentandsolidvolumecontentontheviscosityofthes

4、lurrypropertiesofslurry，whenpH=12，PMAA—NH4asthedispersingagent．addingceramicpowderquality0．15％，3000r／minspeedstirringf1)r15minutes，gotthelowestviscosityofslurry，solidvolumecontentupto60v01％．Thefactorsaffectinggelcuringtimewerestudied．Throughthestudyfoundthat，thegelcuringtimewa

5、sshortenedastheamountofAMincreasing，atthesametime，greenstrengthandotherperformancechanged．Incasetodeterminemonomercontent，wecanachieveprecisecontrolofgelcuringtimepurposebyadjustingtheamountofinitiatorandcatalyst．InaccordancewiththerequirementsofIII凝胶注模成型法制备PZT压电陶瓷theexperimen

6、taloperationtimeandotherfactorstodeterminetheinitiatoragentandthecatalystisaddedinanamountof2．5％and1．25％bymassofthemonomer．Thefactorsthataffecttheperformanceofgreenbodyandsinteredbodywerealsostudiedinthispaper．Thestudyfoundthatthecompressivestrengthofthegreenbodyisincreasedast

7、heamountofmonomerincreasing，theoptimumamountofthemonomeris2．0wt％ofceramicpowder．Withthesolidvolumecontentincreased，thedensityofthebodyincreases，thelinearshrinkagedecreases，compressivestrengthfirstincreasesandthendecreases．Thebodyreachedthemaximumcompressivestrength30MPawhensol

8、idvolumecontentis47．5v01％．Thestudyfoundthat，microstructureoft