沖擊波合成鋯鈦酸鉛95-5粉體及其燒結特性的研究.pdf

1、西南科技大學碩士學位論文沖擊波合成鋯鈦酸鉛955粉體及其燒結特性的研究姓名：王軍霞申請學位級別：碩士專業(yè)：材料學指導教師：楊世源賀紅亮20050418西南科技大學碩士研究生學位論文第1I頁AbstractBecauseofitsgoodpiezoelectricandferroelectricproperties，thelead—zirconate—titanateceramicwithZr：Tiratioof95：5(rZT95／5)

2、hasbeenwidelyusedinpulsedpowerdevicesForthesynthesisofPZr95／5powdernewmethodandtechniqueisalwaysapursuitforresearchersThispaperisaimedtosynthesizethePZT95／5powderbyshockwavetechnique，whichisanevvapproachtopreparehigh—act

3、ivepowdersofpiezoelectricceramics，andisanewstudytoextendtheshockwaveapplicationsToensureentirelyrecoveryofshock—compressedpowders，adouble—tubecylindricalshockwave—loadingdevicewasdesignedViaimpactingeffectofexplosiveshoc

4、kwave，PZT95／5powderwassynthesizedfromamixtureofPb304，Zr02andTi02oxides，withNb205asdopantTheeffectsofshockwavecompressiononthecrystalstructureandphysicalpropertyofthesynthesizedPZT95／5powderWereanalyzedbyXRD，IR，SEM，TG—DSC

5、andXPSmetbodsAndthemechanismofshocksynthesisandmodificationhadanalyzedpreliminarilyTothePZT95／5powdersynthesizedbyshockwavetechnique，byacomparisonofisostatically—pressedcompactswithcold—pressedcompacts，anoptimiumpressing

6、conditionwasfound，whichwasisostaticalpressat250MPafor10minTheinfluenceofsinteringtemperatureandsoakingtime0nceramicsinteringbehaviourswasalsesearchedItindicatedthattherangeofsinteringtemperaturewas1200～1250“C，andthechang

7、einbulkdensityasflfunctionofsinteringsoakingtimewasunapprentMoreovertocomparetheP緞9515ceramicspreparedbysolidphasereactionandbyshockwavetechnique，orthogonaltestandsinglefactoranalysiswereusedtooptimizethesinteringconditi

8、onsTheresultsdemonstratedthatcalciningtemperatureof800“C，calciningtimeof2h，sinteringtemperatureof1280。C，sinteringsoakingtimeof3h，andsinteringheatingrateof10“C／10minwerebetterthanothersThisdissertationshowsthatperovskiteP