Fabrication of ordered porous PZT
- سال انتشار: 1394
- محل انتشار: دهمین کنگره سرامیک ایران
- کد COI اختصاصی: ICC10_078
- زبان مقاله: انگلیسی
- تعداد مشاهده: 244
نویسندگان
Department of Materials, Faculty of Engineering, IKIU, Qazvin
Department of Materials, Faculty of Engineering, IKIU, Qazvin
Department of Materials, Faculty of Engineering, IKIU, Qazvin
Department of Materials, Faculty of Engineering, IKIU, Qazvin
Department of Materials, Faculty of Engineering, IKIU, Qazvin
Department of Materials, Faculty of Engineering, IKIU, Qazvin
چکیده
Piezoelectric composites with ‘۳-۳’ connectivity have been developed for several applications suchas acoustic transducers, sonar and medical imaging. The first step is the fabrication of porouspiezoceramic with ۳-D network connectivity. In this study, porous piezoceramic, lead zirconatetitanate, with geometrically ordered porosities was fabricated. The traditional method of thefabrication of piezoceramics with burned-out plastic sphere (BURPS processing) was utilized. Inorder to produce geometrically ordered porosities, the prefabricated regular spheres were arrangedin a mold and PZT paste was injected into the polymeric scaffold. The most crucial step in thesetechniques is the removal of polymeric materials (pyrolysis); therefore thermal treatment must becarried out at sufficiently slow rate to ۴۲۰℃ based on thermal analysis (DTA) of polystyrene.Eventually all specimens were sintered at ۱۲۵۰℃. The OM and SEM micrographs of porouspiezoceramics showed the presence of a porous structure suitable for polymer injection to promote۳-۳ connectivity of both ceramics and polymer, the porous ceramic specimens were then injectedby vinyl ester resin while the whole system was in a partial vacuum chamber. Porosities anddensities of samples were also studiedکلیدواژه ها
Ordered pores, Porous ceramics, Piezoceramic, PZTاطلاعات بیشتر در مورد COI
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