CAJ | 학술논문

采用传统陶瓷制备工艺制备出了 Bi1/2 Na1/2 Ti1-(Mo 1/2 Sr1/2)O 3(简称 BNT-MS-100)系无铅压电陶瓷材料,研究了(Mo 1/2 Sr1/2)4＋掺杂量对 BNT 基陶瓷材料显微结构和电学性能的影响.研究结果表明,(Mo 1/2 Sr1/2)4＋掺杂并未影响 BNT 陶瓷的晶体结构,仍为纯钙钛矿型结构,而且致密性良好.随着(Mo 1/2 Sr1/2)4＋掺杂量增加,居里温度升高,剩余极化强度先增大后减小.当＝0．004时,BNT-MS-100陶瓷的压电系数最大,33＝104 pC/N,介电损耗最小, tan ＝4．11％.
채용전통도자제비공예제비출료 Bi1/2 Na1/2 Ti1-(Mo 1/2 Sr1/2)O 3(간칭 BNT-MS-100)계무연압전도자재료,연구료(Mo 1/2 Sr1/2)4＋참잡량대 BNT 기도자재료현미결구화전학성능적영향.연구결과표명,(Mo 1/2 Sr1/2)4＋참잡병미영향 BNT 도자적정체결구,잉위순개태광형결구,이차치밀성량호.수착(Mo 1/2 Sr1/2)4＋참잡량증가,거리온도승고,잉여겁화강도선증대후감소.당＝0．004시,BNT-MS-100도자적압전계수최대,33＝104 pC/N,개전손모최소, tan ＝4．11％.
Lead-free piezoelectric ceramics,Bi1/2 Na1/2 Ti1 - (Mo 1/2 Sr1/2 )O 3 (abbreviated as BNT-MS-100 ), were fabricated by a conventional solid state reaction method.The effect of the doping of (Mo 1/2 Sr1/2 )4+ on the microstructure and electric properties of the ceramics were investigated.The results showed that the BNT-based ceramics with (Mo 1/2 Sr1/2 )4+ doping did not change the crystal structure and have formed a pure perovskite phase with a dense structure.With (Mo 1/2 Sr1/2 )4+ doping increases,the Curie temperature increased,the rem-nant polarization increased first and then decreased,giving its maximum value at =0.004,where the Bi1/2 Na1/2 Ti1 - (Mo 1/2 Sr1/2 )O 3 ceramics exhibited the highest piezoelectric constant of 3 3 =104 pC/N,together with the lowest dielectric loss tan of 4.1 1%.