CAJ | 학술논문

用熔盐法制备了片状 Bi4Ti3O12模板，由 Bi4Ti3O12片状前驱体制备了 Bi0.5Na0.5TiO3（BNT）模板，由模板晶粒生长法制备了织构化0.91Bi0.5Na0.5TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3陶瓷。研究了 Bi4Ti3O12以及Bi0.5Na0.5TiO3两种模板及模板含量对Bi0.5Na0.5TiO3无铅压电体系织构化的影响及织构化陶瓷的压电性能。结果表明Bi0.5Na0.5TiO3模板比Bi4Ti3O12模板更适合用于此体系的织构化，并且，在加入质量分数15%的Bi0.5Na0.5TiO3模板时 Bi0.5Na0.5TiO3陶瓷取向度达到87.3%。质量分数5%的 BNT 模板织构化的陶瓷在6×103 V/mm 电场下应变达到0.226%，相较于随机取向陶瓷提高了48.7%。
용용염법제비료편상 Bi4Ti3O12모판，유 Bi4Ti3O12편상전구체제비료 Bi0.5Na0.5TiO3（BNT）모판，유모판정립생장법제비료직구화0.91Bi0.5Na0.5TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3도자。연구료 Bi4Ti3O12이급Bi0.5Na0.5TiO3량충모판급모판함량대Bi0.5Na0.5TiO3무연압전체계직구화적영향급직구화도자적압전성능。결과표명Bi0.5Na0.5TiO3모판비Bi4Ti3O12모판경괄합용우차체계적직구화，병차，재가입질량분수15%적Bi0.5Na0.5TiO3모판시 Bi0.5Na0.5TiO3도자취향도체도87.3%。질량분수5%적 BNT 모판직구화적도자재6×103 V/mm 전장하응변체도0.226%，상교우수궤취향도자제고료48.7%。
Bi4Ti3O12 platelet templates were obtained by molten salt synthesis, and Bi0.5Na0.5TiO3 templates were synthesized from Bi4Ti3O12 platelet precursor. Textured 0.91Bi0.5Na0.5TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3 ceramics were fabricated by template grain growth method. Effects of different templates and template contents on textured Bi0.5Na0.5TiO3-based lead-free piezoelectric system and piezoelectricity of textured ceramics were investigated. The results show that BNT templates are more suitable to texture this system than Bi4Ti3O12 templates, and a orientation degree of 87.3%is obtained at 15%(mass fraction) of Bi0.5Na0.5TiO3 templates. Textured ceramics using 5%(mass fraction) of BNT templates showing a strain of 0.226%, achieve 48.7%enhancement compared with randomly oriented counterparts (E=6×103 V/mm).