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Lead-free pyroelectric ceramic with high depolarization temperature as well as preparation method and application of lead-free pyroelectric ceramic
The invention belongs to the related technical field of pyroelectric infrared detection, and discloses a high-depolarization-temperature lead-free pyroelectric ceramic and a preparation method and application thereof.The lead-free pyroelectric ceramic comprises 0.8 (Bi0. 5Na0. 5) TiO3-0. 2BaTiO3-XMn, and X is larger than 0.0 and smaller than 0.8%. By introducing the Mn element into a tetragonal-phase 0.8 (Bi0. 5Na0. 5) TiO3-0. 2BaTiO3 matrix, the depolarization temperature of the lead-free pyroelectric ceramic is increased, and the depolarization temperature of the lead-free pyroelectric ceramic is increased. And the lead-free pyroelectric material can show excellent pyroelectric performance while ensuring that the lead-free pyroelectric material has relatively high depolarization temperature. When the ceramic is prepared, firstly, the ceramic slurry is subjected to tape casting by utilizing a tape casting process to form a thin film with better quality, then the thin film is cut into a plurality of pieces to be stacked, and then the stacked thin film is subjected to hot pressing to obtain a thick film blank. According to the preparation method, cutting and thinning are not needed, and the utilization rate of the sensitive element ceramic is greatly improved.
本发明属于热释电红外探测相关技术领域，其公开了一种高退极化温度无铅热释电陶瓷及其制备方法与应用，无铅热释电陶瓷组成包括0.8(Bi0.5Na0.5)TiO3‑0.2BaTiO3‑XMn，0.0＜X＜0.8％，通过在四方相的0.8(Bi0.5Na0.5)TiO3‑0.2BaTiO3基体中引入Mn元素，可以在保证无铅热释电具有较高的退极化温度的同时表现出优异的热释电性能。在制备陶瓷时，先利用流延工艺将所述陶瓷浆料流延成质量较好的薄膜，再将所述薄膜切分为多片后进行堆叠，然后对堆叠后的薄膜进行热压，得到厚膜胚体，相比于传统技术中用固相法制备较厚的陶瓷块，本发明制备可以在不需要进行切割和减薄，极大地提高了敏感元陶瓷的利用率。
Lead-free pyroelectric ceramic with high depolarization temperature as well as preparation method and application of lead-free pyroelectric ceramic
The invention belongs to the related technical field of pyroelectric infrared detection, and discloses a high-depolarization-temperature lead-free pyroelectric ceramic and a preparation method and application thereof.The lead-free pyroelectric ceramic comprises 0.8 (Bi0. 5Na0. 5) TiO3-0. 2BaTiO3-XMn, and X is larger than 0.0 and smaller than 0.8%. By introducing the Mn element into a tetragonal-phase 0.8 (Bi0. 5Na0. 5) TiO3-0. 2BaTiO3 matrix, the depolarization temperature of the lead-free pyroelectric ceramic is increased, and the depolarization temperature of the lead-free pyroelectric ceramic is increased. And the lead-free pyroelectric material can show excellent pyroelectric performance while ensuring that the lead-free pyroelectric material has relatively high depolarization temperature. When the ceramic is prepared, firstly, the ceramic slurry is subjected to tape casting by utilizing a tape casting process to form a thin film with better quality, then the thin film is cut into a plurality of pieces to be stacked, and then the stacked thin film is subjected to hot pressing to obtain a thick film blank. According to the preparation method, cutting and thinning are not needed, and the utilization rate of the sensitive element ceramic is greatly improved.
本发明属于热释电红外探测相关技术领域，其公开了一种高退极化温度无铅热释电陶瓷及其制备方法与应用，无铅热释电陶瓷组成包括0.8(Bi0.5Na0.5)TiO3‑0.2BaTiO3‑XMn，0.0＜X＜0.8％，通过在四方相的0.8(Bi0.5Na0.5)TiO3‑0.2BaTiO3基体中引入Mn元素，可以在保证无铅热释电具有较高的退极化温度的同时表现出优异的热释电性能。在制备陶瓷时，先利用流延工艺将所述陶瓷浆料流延成质量较好的薄膜，再将所述薄膜切分为多片后进行堆叠，然后对堆叠后的薄膜进行热压，得到厚膜胚体，相比于传统技术中用固相法制备较厚的陶瓷块，本发明制备可以在不需要进行切割和减薄，极大地提高了敏感元陶瓷的利用率。
Lead-free pyroelectric ceramic with high depolarization temperature as well as preparation method and application of lead-free pyroelectric ceramic
一种高退极化温度无铅热释电陶瓷及其制备方法与应用
ZHANG GUANGZU (Autor:in) / CEN FANGJIE (Autor:in) / FAN MINGZHI (Autor:in) / LUO FANGYUAN (Autor:in) / JIANG SHENGLIN (Autor:in) / LI KANGHUA (Autor:in)
06.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
G01J
Messen der Intensität, der Geschwindigkeit, der spektralen Zusammensetzung, der Polarisation, der Phase oder der Pulscharakteristik von infrarotem, sichtbarem oder ultraviolettem Licht
,
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
/
H10N
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