Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrahigh-temperature textured piezoelectric ceramic preparation method
The invention discloses a preparation method of ultrahigh-temperature textured piezoelectric ceramics, and relates to the technical field of piezoelectric ceramics, and the preparation method specifically comprises the following steps: orienting a CBT template by using a reaction template crystal growth (RTGG) method, so that materials grow along the same orientation, and successfully obtaining the ultrahigh-temperature textured piezoelectric ceramics with high orientation, high density and high temperature resistance. And the piezoelectric property of the textured CBT piezoelectric ceramic is greatly improved along a specific direction. The high Curie temperature and the high piezoelectric property of the material are considered. According to the piezoelectric ceramic prepared by the invention, excellent Curie temperature and relatively high piezoelectric constant are realized at the same time, and a prepared sample has relatively low dielectric loss in a temperature range of 200-450 DEG C; in addition, the prepared ceramic sample has relatively large d33, and meanwhile, the temperature stability is relatively excellent. The texturing selects high-performance orientation of the material without influencing the material d33, the piezoelectric constant d33 can reach 25pC/N, and the TC can reach 790 DEG C; and the use temperature requirements of an ultra-deep well detection piezoelectric transducer and an airspace engine vibration receptor on the piezoelectric material can be met.
本发明公开了一种超高温织构压电陶瓷制备方法，涉及压电陶瓷技术领域，具体包括以下步骤：通过使用反应模板晶生长法(RTGG)对CBT模板定向，使材料均沿同一取向生长，成功获得具有高取向性，高致密度，且沿特定方向压电性能大幅提高的织构CBT压电陶瓷。兼顾材料的高居里温度与高压电性能。本发明制备的压电陶瓷同时实现了优异居里温度及较高压电常数，并且所制备样品在200‑450oC温度范围内具有较小的介电损耗；此外，所制备的陶瓷样品具有较大的d33，同时温度稳定性也较为优异。织构化在不影响材料d33的同时选取了材料高性能的取向，压电常数d33可达25pC/N，TC可达790oC；可满足用于超深井探测压电换能器以及航天发动机震动感受器对压电材料的使用温度要求。
Ultrahigh-temperature textured piezoelectric ceramic preparation method
The invention discloses a preparation method of ultrahigh-temperature textured piezoelectric ceramics, and relates to the technical field of piezoelectric ceramics, and the preparation method specifically comprises the following steps: orienting a CBT template by using a reaction template crystal growth (RTGG) method, so that materials grow along the same orientation, and successfully obtaining the ultrahigh-temperature textured piezoelectric ceramics with high orientation, high density and high temperature resistance. And the piezoelectric property of the textured CBT piezoelectric ceramic is greatly improved along a specific direction. The high Curie temperature and the high piezoelectric property of the material are considered. According to the piezoelectric ceramic prepared by the invention, excellent Curie temperature and relatively high piezoelectric constant are realized at the same time, and a prepared sample has relatively low dielectric loss in a temperature range of 200-450 DEG C; in addition, the prepared ceramic sample has relatively large d33, and meanwhile, the temperature stability is relatively excellent. The texturing selects high-performance orientation of the material without influencing the material d33, the piezoelectric constant d33 can reach 25pC/N, and the TC can reach 790 DEG C; and the use temperature requirements of an ultra-deep well detection piezoelectric transducer and an airspace engine vibration receptor on the piezoelectric material can be met.
本发明公开了一种超高温织构压电陶瓷制备方法，涉及压电陶瓷技术领域，具体包括以下步骤：通过使用反应模板晶生长法(RTGG)对CBT模板定向，使材料均沿同一取向生长，成功获得具有高取向性，高致密度，且沿特定方向压电性能大幅提高的织构CBT压电陶瓷。兼顾材料的高居里温度与高压电性能。本发明制备的压电陶瓷同时实现了优异居里温度及较高压电常数，并且所制备样品在200‑450oC温度范围内具有较小的介电损耗；此外，所制备的陶瓷样品具有较大的d33，同时温度稳定性也较为优异。织构化在不影响材料d33的同时选取了材料高性能的取向，压电常数d33可达25pC/N，TC可达790oC；可满足用于超深井探测压电换能器以及航天发动机震动感受器对压电材料的使用温度要求。
Ultrahigh-temperature textured piezoelectric ceramic preparation method
一种超高温织构压电陶瓷制备方法
YAN YONGKE (Autor:in) / WANG YIKE (Autor:in) / XU ZHUO (Autor:in) / LUAN PENG (Autor:in) / WANG SANHONG (Autor:in) / ZHENG SHUGUANG (Autor:in) / DU HONGLIANG (Autor:in)
06.02.2024
Patent
Elektronische Ressource
Chinesisch
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