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Bismuth ferrite-based leadless piezoelectric ceramic material and preparation method thereof
The invention discloses a bismuth ferrite-based leadless piezoelectric ceramic material and a preparation method thereof.The preparation method comprises the steps that 1, raw materials including Fe2O3, Bi2O3, TiO2, BaCO3, CuO and xLi2CO3 are ground and mixed according to the molar ratio, and then an original mixed material is obtained; the preparation method comprises the following steps: preparing a pre-pressed sheet from an original mixed material, sintering the pre-pressed sheet to obtain a pre-sintered sample, grinding the pre-sintered sample, granulating the pre-sintered sample, and carrying out tabletting molding to obtain a tabletting molding sample, and sintering the tabletting molding sample to obtain the bismuth ferrite-based leadless piezoelectric ceramic material, aiming at the problems that a BiFeO3-BaTiO3-based ceramic material is relatively poor in crystallization property, relatively high in sintering temperature and not high in electrical property, the bismuth ferrite-based leadless piezoelectric ceramic material is prepared from the bismuth ferrite-based leadless piezoelectric ceramic material and the preparation method of the bismuth ferrite-based leadless piezoelectric ceramic material. CuO and Li2CO3 co-doping modification is carried out on 0.75 BiFeO3-0. 25BaTiO3, so that the crystallization property of the BiFeO3-0. 25BaTiO3 is remarkably improved, the ceramic quality is improved, and the BiFeO3-0. 25BaTiO3 has excellent multifunctionality, shows a saturated ferroelectric hysteresis loop and has remarkable dielectric voltage electric responsiveness.
本发明公开了一种铁酸铋基无铅压电陶瓷材料及其制备方法，步骤1，将各原料摩尔比为Fe2O3:Bi2O3:TiO2:BaCO3:CuO:xLi2CO3，进行研磨混合后得到原始混料；将原始混料制备预压片，经烧结后得到预烧结样品，再将预烧结样品经研磨，造粒及压片塑形后，得到压片成型样品烧结后得到铁酸铋基无铅压电陶瓷材料，针对BiFeO3‑BaTiO3基陶瓷材料结晶性能较差，烧结温度较高，电学性能不高的问题，提出对0.75BiFeO3‑0.25BaTiO3开展CuO与Li2CO3共掺杂改性，显著改善了其结晶性能，提高了陶瓷质量，具有优异的多功能性，显示饱和的电滞回线，具有显著的介电压电响应性。
Bismuth ferrite-based leadless piezoelectric ceramic material and preparation method thereof
The invention discloses a bismuth ferrite-based leadless piezoelectric ceramic material and a preparation method thereof.The preparation method comprises the steps that 1, raw materials including Fe2O3, Bi2O3, TiO2, BaCO3, CuO and xLi2CO3 are ground and mixed according to the molar ratio, and then an original mixed material is obtained; the preparation method comprises the following steps: preparing a pre-pressed sheet from an original mixed material, sintering the pre-pressed sheet to obtain a pre-sintered sample, grinding the pre-sintered sample, granulating the pre-sintered sample, and carrying out tabletting molding to obtain a tabletting molding sample, and sintering the tabletting molding sample to obtain the bismuth ferrite-based leadless piezoelectric ceramic material, aiming at the problems that a BiFeO3-BaTiO3-based ceramic material is relatively poor in crystallization property, relatively high in sintering temperature and not high in electrical property, the bismuth ferrite-based leadless piezoelectric ceramic material is prepared from the bismuth ferrite-based leadless piezoelectric ceramic material and the preparation method of the bismuth ferrite-based leadless piezoelectric ceramic material. CuO and Li2CO3 co-doping modification is carried out on 0.75 BiFeO3-0. 25BaTiO3, so that the crystallization property of the BiFeO3-0. 25BaTiO3 is remarkably improved, the ceramic quality is improved, and the BiFeO3-0. 25BaTiO3 has excellent multifunctionality, shows a saturated ferroelectric hysteresis loop and has remarkable dielectric voltage electric responsiveness.
本发明公开了一种铁酸铋基无铅压电陶瓷材料及其制备方法，步骤1，将各原料摩尔比为Fe2O3:Bi2O3:TiO2:BaCO3:CuO:xLi2CO3，进行研磨混合后得到原始混料；将原始混料制备预压片，经烧结后得到预烧结样品，再将预烧结样品经研磨，造粒及压片塑形后，得到压片成型样品烧结后得到铁酸铋基无铅压电陶瓷材料，针对BiFeO3‑BaTiO3基陶瓷材料结晶性能较差，烧结温度较高，电学性能不高的问题，提出对0.75BiFeO3‑0.25BaTiO3开展CuO与Li2CO3共掺杂改性，显著改善了其结晶性能，提高了陶瓷质量，具有优异的多功能性，显示饱和的电滞回线，具有显著的介电压电响应性。
Bismuth ferrite-based leadless piezoelectric ceramic material and preparation method thereof
一种铁酸铋基无铅压电陶瓷材料及其制备方法
JIANG ZHISHUI (author) / WEN LI (author) / REN WEI (author) / ZHUANG JIAN (author) / HU HAO (author)
2023-08-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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