CAJ | 학술논문

采用直接反应烧结法制备了(Ba1-x Cax )(Ti0．85 Zr0．15)O 3无铅压电陶瓷,分析了不同的 Ca 含量时陶瓷的晶相结构、微观结构、密度及电性能.结果表明,采用直接反应烧结法制备的(Ba1-x Cax )(Ti0．85 Zr0．15)O3无铅压电陶瓷具有纯的钙钛矿相结构；微观结构致密,晶粒大小比较均匀,陶瓷样品出现较大的直径收缩率(25％左右)；随着 Ca 含量的增加陶瓷的居里温度略微降低,室温介电常数出现较大增加,压电常数变大,其中 x ＝0．15时压电性能最好,d 33为208 pC/N.
채용직접반응소결법제비료(Ba1-x Cax )(Ti0．85 Zr0．15)O 3무연압전도자,분석료불동적 Ca 함량시도자적정상결구、미관결구、밀도급전성능.결과표명,채용직접반응소결법제비적(Ba1-x Cax )(Ti0．85 Zr0．15)O3무연압전도자구유순적개태광상결구；미관결구치밀,정립대소비교균균,도자양품출현교대적직경수축솔(25％좌우)；수착 Ca 함량적증가도자적거리온도략미강저,실온개전상수출현교대증가,압전상수변대,기중 x ＝0．15시압전성능최호,d 33위208 pC/N.
(Ba1 -x Cax )(Ti0.85 Zr0.1 5 )O 3 (x =0-0.15)lead-free piezoceramics were prepared by direct reaction sinte-ring method.The phase structure,microstructure,density and electrical properties of the ceramics with differ-ent Ca contents were analyzed.The ceramics prepared by direct reaction sintering method possessed pure per-ovskite phase structure.The ceramics showed compact microstructure and large diameter shrinkage.The Curie temperatures of the samples slightly decreased for all the samples.The piezoelectric constant d 3 3 increased grad-ually with increasing the Ca content.When x =0.15 the sample possessed largest piezoelectric constant of 208 pC/N.