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A platform for research: civil engineering, architecture and urbanism
- BiFeO3-BaTiO3 BASED ENVIRONMENT FRIENDLY LEAD-FREE PIEZOCERAMICS WITH PHYSICAL PROPERTIES AND MANUFACTURING METHOD THEREOF
본 발명은 (1-x)Bi1.03FeO3-x(Ba1-2yLiyAly)TiO3 (0.225 ≤ x ≤ 0.300, 0.005≤ y ≤ 0.020)로 표시되는 친환경 무연 압전 세라믹스 및 그 제조방법에 대한 것으로서, 우수한 기계적 품질계수(Qm), 전기기계 결합계수(kP) 및 정압전 상수(d33) 값을 가지며 동시에 300℃ 이상의 높은 상전이 온도를 가져, 초음파 센서, 초음파 세척기, 초음파 가습기 등 각종 초음파 소자 또는 장치의 핵심 소재로서 유용하게 사용될 수 있다.
The present invention relates to eco-friendly lead-free piezoelectric ceramics expressed by (1-x)Bi_(1.03)FeO_3-x(Ba_(1-2y)Li_yAl_y)TiO_3 and a manufacturing method thereof, wherein 0.225 <= x <= 0.300 and 0.005<= y <= 0.020. Since the eco-friendly lead-free piezoelectric ceramics has excellent mechanical quality factor (Q_m), electromechanical coupling factor (k_P), and static piezoelectric constant (d_(33)) value while simultaneously having the high phase transition temperature of 300℃ or higher, the present invention can be usefully used as a core material for various ultrasonic elements or devices such as ultrasonic sensors, ultrasonic cleaners, and ultrasonic humidifiers.
- BiFeO3-BaTiO3 BASED ENVIRONMENT FRIENDLY LEAD-FREE PIEZOCERAMICS WITH PHYSICAL PROPERTIES AND MANUFACTURING METHOD THEREOF
본 발명은 (1-x)Bi1.03FeO3-x(Ba1-2yLiyAly)TiO3 (0.225 ≤ x ≤ 0.300, 0.005≤ y ≤ 0.020)로 표시되는 친환경 무연 압전 세라믹스 및 그 제조방법에 대한 것으로서, 우수한 기계적 품질계수(Qm), 전기기계 결합계수(kP) 및 정압전 상수(d33) 값을 가지며 동시에 300℃ 이상의 높은 상전이 온도를 가져, 초음파 센서, 초음파 세척기, 초음파 가습기 등 각종 초음파 소자 또는 장치의 핵심 소재로서 유용하게 사용될 수 있다.
The present invention relates to eco-friendly lead-free piezoelectric ceramics expressed by (1-x)Bi_(1.03)FeO_3-x(Ba_(1-2y)Li_yAl_y)TiO_3 and a manufacturing method thereof, wherein 0.225 <= x <= 0.300 and 0.005<= y <= 0.020. Since the eco-friendly lead-free piezoelectric ceramics has excellent mechanical quality factor (Q_m), electromechanical coupling factor (k_P), and static piezoelectric constant (d_(33)) value while simultaneously having the high phase transition temperature of 300℃ or higher, the present invention can be usefully used as a core material for various ultrasonic elements or devices such as ultrasonic sensors, ultrasonic cleaners, and ultrasonic humidifiers.
- BiFeO3-BaTiO3 BASED ENVIRONMENT FRIENDLY LEAD-FREE PIEZOCERAMICS WITH PHYSICAL PROPERTIES AND MANUFACTURING METHOD THEREOF
우수한 물성을 가지는 비스무스 페라이트-티탄산 바륨계 친환경 무연 압전 세라믹스 및 그 제조방법
2022-03-30
Patent
Electronic Resource
Korean
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