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High-voltage and high-dielectric sodium niobate-based ceramic material with good process tolerance, and preparation method and application of high-voltage and high-dielectric sodium niobate-based ceramic material
The invention relates to a sodium niobate-based ceramic material with good process tolerance, high voltage and high dielectric properties and a preparation method and application thereof, the chemical general formula of the sodium niobate-based ceramic material is (0.90-x) NaNbO3-0. 10Ba (Ti0. 7Sn0. 3) O3-xNaSbO3, and x is more than or equal to 0.01 and less than or equal to 0.02; the preparation method comprises the following steps: mixing a sodium source, a niobium source, an antimony source, a barium source, a titanium source and a tin source, and sequentially carrying out primary ball milling, calcination, secondary ball milling, drying, granulation, compression molding, degumming and sintering to obtain the sodium niobate-based ceramic material. Compared with the prior art, the prepared novel sodium niobate-based ceramic has excellent piezoelectric property, the piezoelectric coefficient can reach 361pC/N, and the dielectric constant can reach 4500, so that the novel sodium niobate-based ceramic has a good application prospect in the aspects of electroacoustic devices and medical ultrasonic devices; meanwhile, the novel sodium niobate-based ceramic with high piezoelectric property and high dielectric constant can be prepared in a wider sintering temperature zone, and the process tolerance is good.
本发明涉及一种具有良好工艺容忍性的高压电及高介电性能的铌酸钠基陶瓷材料及其制备方法与应用，其中铌酸钠基陶瓷材料的化学通式为(0.90‑x)NaNbO3‑0.10Ba(Ti0.7Sn0.3)O3‑xNaSbO3，其中0.01≤x≤0.02；制备方法包括：将钠源、铌源、锑源、钡源、钛源、锡源混合后，依次进行初次球磨、煅烧、二次球磨、烘干、造粒、压制成型、排胶、烧结后，即得到所述的铌酸钠基陶瓷材料。与现有技术相比，本发明所制备的新型铌酸钠基陶瓷具有优异的压电性能，压电系数可达361pC/N，介电常数可达到4500，因此在电声器件和医疗超声器件方面有很好的应用前景；同时本发明能够在较宽的烧结温区制备高压电性能及高介电常数的新型铌酸钠基陶瓷，具有良好的工艺容忍性。
High-voltage and high-dielectric sodium niobate-based ceramic material with good process tolerance, and preparation method and application of high-voltage and high-dielectric sodium niobate-based ceramic material
The invention relates to a sodium niobate-based ceramic material with good process tolerance, high voltage and high dielectric properties and a preparation method and application thereof, the chemical general formula of the sodium niobate-based ceramic material is (0.90-x) NaNbO3-0. 10Ba (Ti0. 7Sn0. 3) O3-xNaSbO3, and x is more than or equal to 0.01 and less than or equal to 0.02; the preparation method comprises the following steps: mixing a sodium source, a niobium source, an antimony source, a barium source, a titanium source and a tin source, and sequentially carrying out primary ball milling, calcination, secondary ball milling, drying, granulation, compression molding, degumming and sintering to obtain the sodium niobate-based ceramic material. Compared with the prior art, the prepared novel sodium niobate-based ceramic has excellent piezoelectric property, the piezoelectric coefficient can reach 361pC/N, and the dielectric constant can reach 4500, so that the novel sodium niobate-based ceramic has a good application prospect in the aspects of electroacoustic devices and medical ultrasonic devices; meanwhile, the novel sodium niobate-based ceramic with high piezoelectric property and high dielectric constant can be prepared in a wider sintering temperature zone, and the process tolerance is good.
本发明涉及一种具有良好工艺容忍性的高压电及高介电性能的铌酸钠基陶瓷材料及其制备方法与应用，其中铌酸钠基陶瓷材料的化学通式为(0.90‑x)NaNbO3‑0.10Ba(Ti0.7Sn0.3)O3‑xNaSbO3，其中0.01≤x≤0.02；制备方法包括：将钠源、铌源、锑源、钡源、钛源、锡源混合后，依次进行初次球磨、煅烧、二次球磨、烘干、造粒、压制成型、排胶、烧结后，即得到所述的铌酸钠基陶瓷材料。与现有技术相比，本发明所制备的新型铌酸钠基陶瓷具有优异的压电性能，压电系数可达361pC/N，介电常数可达到4500，因此在电声器件和医疗超声器件方面有很好的应用前景；同时本发明能够在较宽的烧结温区制备高压电性能及高介电常数的新型铌酸钠基陶瓷，具有良好的工艺容忍性。
High-voltage and high-dielectric sodium niobate-based ceramic material with good process tolerance, and preparation method and application of high-voltage and high-dielectric sodium niobate-based ceramic material
一种具有良好工艺容忍性的高压电及高介电性能的铌酸钠基陶瓷材料及其制备方法与应用
SHEN BO (author) / CAO YINGBO (author) / LIN JINFENG (author) / ZHAI JIWEI (author)
2022-05-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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