Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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High Curie temperature lead-free pyroelectric ceramic material and preparation method thereof
The invention discloses a high Curie temperature lead-free pyroelectric ceramic material and a preparation method thereof, and belongs to the technical field of pyroelectric ceramic materials. The invention relates to a ceramic material, in particular to a potassium sodium niobate-based lead-free pyroelectric ceramic material, the chemical formula of which is (1-x) (K < 0.5 > Na < 0.5 >) < 0.95 > Li < 0.05 > NbO < 3-x > BiFeO < 3 >, and x is equal to 0.003-0.02. The lead-free pyroelectric ceramic material provided by the invention can be prepared by adopting a traditional solid phase method powder preparation and air sintering process. The prepared lead-free pyroelectric ceramic material is small in grain size, moderate in dielectric constant, high in Curie temperature and depolarization temperature and good in temperature stability. In addition, the preparation method disclosed by the invention has the advantages of simple process, no need of special equipment, low cost and the like, is suitable for large-scale production and meets the requirements of industrial production.
本发明公开了一种高居里温度无铅热释电陶瓷材料及其制备方法，属于热释电陶瓷材料技术领域。本发明的陶瓷材料，具体是铌酸钾钠基无铅热释电陶瓷材料，其化学式为(1‑x)(K0.5Na0.5)0.95Li0.05NbO3‑xBiFeO3，其中：x＝0.003～0.02。本发明提供的无铅热释电陶瓷材料可以采用传统的固相法制粉和空气烧结工艺制备而成。所制备的无铅热释电陶瓷材料不仅具有晶粒尺寸小，介电常数适中，而且居里温度和退极化温度高，温度稳定性好。另外，本发明的制备方法具有工艺简单、无需特殊装备、成本低等优点，适合规模化生产，符合工业化生产要求。
High Curie temperature lead-free pyroelectric ceramic material and preparation method thereof
The invention discloses a high Curie temperature lead-free pyroelectric ceramic material and a preparation method thereof, and belongs to the technical field of pyroelectric ceramic materials. The invention relates to a ceramic material, in particular to a potassium sodium niobate-based lead-free pyroelectric ceramic material, the chemical formula of which is (1-x) (K < 0.5 > Na < 0.5 >) < 0.95 > Li < 0.05 > NbO < 3-x > BiFeO < 3 >, and x is equal to 0.003-0.02. The lead-free pyroelectric ceramic material provided by the invention can be prepared by adopting a traditional solid phase method powder preparation and air sintering process. The prepared lead-free pyroelectric ceramic material is small in grain size, moderate in dielectric constant, high in Curie temperature and depolarization temperature and good in temperature stability. In addition, the preparation method disclosed by the invention has the advantages of simple process, no need of special equipment, low cost and the like, is suitable for large-scale production and meets the requirements of industrial production.
本发明公开了一种高居里温度无铅热释电陶瓷材料及其制备方法，属于热释电陶瓷材料技术领域。本发明的陶瓷材料，具体是铌酸钾钠基无铅热释电陶瓷材料，其化学式为(1‑x)(K0.5Na0.5)0.95Li0.05NbO3‑xBiFeO3，其中：x＝0.003～0.02。本发明提供的无铅热释电陶瓷材料可以采用传统的固相法制粉和空气烧结工艺制备而成。所制备的无铅热释电陶瓷材料不仅具有晶粒尺寸小，介电常数适中，而且居里温度和退极化温度高，温度稳定性好。另外，本发明的制备方法具有工艺简单、无需特殊装备、成本低等优点，适合规模化生产，符合工业化生产要求。
High Curie temperature lead-free pyroelectric ceramic material and preparation method thereof
一种高居里温度无铅热释电陶瓷材料及其制备方法
LIU HANXING (Autor:in) / LIAO YULAN (Autor:in) / HAO HUA (Autor:in) / SU CONG (Autor:in) / YAO ZHONGHUA (Autor:in) / CAO MINGHE (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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