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Low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material
The invention belongs to the field of electronic ceramics and manufacturing thereof, and relates to a low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material and a preparation method thereof. A typical representative CaAl2B2O7 of a CaO-Al2O3-B2O3 ternary system is used as a low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material for the first time, the low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material comprises the following raw materials: CaCO3, Al2O3 and H3BO3, the chemical general formula is CaAl2xB2O7(x=0.25-1), the main crystal phase is CaAl2B2O7, which is prepared by a solid-phase sintering method; the pre-sintering temperature is 750-900 DEG C and the sintering temperature is 930-1040DEG C; the material has a low dielectric constant of 4-6, the loss is as low as 2.14*10<-4>, and the frequency temperature coefficient is -20--30 ppm/DEG C. The invention provides a new choice for the low-dielectric low-loss dielectric ceramic material.
本发明属于电子陶瓷及其制造领域，涉及一种低介低损Ca‑Al‑B基微波介质陶瓷材料及其制备方法。本发明首次将CaO‑Al2O3‑B2O3三元体系的典型代表CaAl2B2O7作为低介低损Ca‑Al‑B基微波介质陶瓷材料应用，提供的低介低损Ca‑Al‑B基微波介质陶瓷材料，其原料组成为CaCO3、Al2O3和H3BO3，化学通式为CaAl2xB2O7(x＝0.25～1)，主晶相为CaAl2B2O7，利用固相烧结法制备，其预烧温度为750℃～900℃，烧结温度为930℃～1040℃，具有低介电常数(4～6)，损耗低至2.14×10‑4，频率温度系数‑20～‑30ppm/℃。本发明为低介低损介质陶瓷材料提供了一种新的选择。
Low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material
The invention belongs to the field of electronic ceramics and manufacturing thereof, and relates to a low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material and a preparation method thereof. A typical representative CaAl2B2O7 of a CaO-Al2O3-B2O3 ternary system is used as a low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material for the first time, the low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material comprises the following raw materials: CaCO3, Al2O3 and H3BO3, the chemical general formula is CaAl2xB2O7(x=0.25-1), the main crystal phase is CaAl2B2O7, which is prepared by a solid-phase sintering method; the pre-sintering temperature is 750-900 DEG C and the sintering temperature is 930-1040DEG C; the material has a low dielectric constant of 4-6, the loss is as low as 2.14*10<-4>, and the frequency temperature coefficient is -20--30 ppm/DEG C. The invention provides a new choice for the low-dielectric low-loss dielectric ceramic material.
本发明属于电子陶瓷及其制造领域，涉及一种低介低损Ca‑Al‑B基微波介质陶瓷材料及其制备方法。本发明首次将CaO‑Al2O3‑B2O3三元体系的典型代表CaAl2B2O7作为低介低损Ca‑Al‑B基微波介质陶瓷材料应用，提供的低介低损Ca‑Al‑B基微波介质陶瓷材料，其原料组成为CaCO3、Al2O3和H3BO3，化学通式为CaAl2xB2O7(x＝0.25～1)，主晶相为CaAl2B2O7，利用固相烧结法制备，其预烧温度为750℃～900℃，烧结温度为930℃～1040℃，具有低介电常数(4～6)，损耗低至2.14×10‑4，频率温度系数‑20～‑30ppm/℃。本发明为低介低损介质陶瓷材料提供了一种新的选择。
Low-dielectric low-loss Ca-Al-B-based microwave dielectric ceramic material
一种低介低损Ca-Al-B基微波介质陶瓷材料
LI ENZHU (author) / WEN QINGYU (author) / YANG HONGCHENG (author) / SUN CHENGLI (author) / ZHONG CHAOWEI (author) / ZHANG SHUREN (author)
2021-01-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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