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Ultralow-temperature sintered microwave dielectric material Ca2V2O7-LiF and preparation method thereof
The invention belongs to the field of electronic materials and manufacturing thereof, particularly provides an ultralow-temperature sintering microwave dielectric material Ca2V2O7-LiF and a preparation method thereof, and aims at solving the problems that an existing microwave dielectric material R2V2O7 (R = Ba, Sr and Ca) is relatively high in sintering temperature and moderate in microwave dielectric property. Compared with pure-phase Ca2V2O7, the ultralow-temperature microwave dielectric material Ca2V2O7-LiF has the advantages that the sintering temperature can be greatly reduced, ultralow-temperature sintering at the temperature of 525-575 DEG C is realized, meanwhile, the microwave dielectric property of the material is remarkably improved, the Q * f value is 31000-46000 GHz, the dielectric constant is 11-12, the temperature coefficient of resonance frequency is-126-115 ppm/DEG C, and the microwave dielectric property of the material is remarkably improved. Particularly, Ca2V2O7-3wt% LiF has excellent microwave dielectric properties after being sintered at 550 DEG C: Q * f is equal to 46476 GHz, epsilon r is equal to 11.83, tauf is equal to-116.43 ppm/DEG C, which is essentially different from those of a common sintering aid which reduces the sintering temperature while sacrificing the material performance; moreover, the preparation process is simple, and large-scale batch production is facilitated; the method has a wide application prospect in the field of ultralow-temperature co-fired ceramics.
本发明属于电子材料及其制造领域，具体提供一种超低温烧结微波介质材料Ca2V2O7‑LiF及其制备方法，用以解决现有微波介质材料R2V2O7(R＝Ba,Sr,and Ca)烧结温度较高且微波介电性能平庸的问题。相比于纯相Ca2V2O7，本发明超低温微波介质材料Ca2V2O7‑LiF能够大大降低烧结温度、实现525～575℃下的超低温烧结，同时，显著提升材料的微波介电性能：Q×f值为31000～46000GHz、介电常数为11‑12、谐振频率温度系数为‑126～‑115ppm/℃，尤其Ca2V2O7‑3wt％LiF在550℃下烧结得到优异的微波介电性能：Q×f＝46476GHz、εr＝11.83、τf＝‑116.43ppm/℃，本质区别于普遍助烧剂降低烧结温度的同时牺牲材料的性能；并且，制备工艺简单、便于大规模批量化生产；在超低温共烧陶瓷领域具有广阔的应用前景。
Ultralow-temperature sintered microwave dielectric material Ca2V2O7-LiF and preparation method thereof
The invention belongs to the field of electronic materials and manufacturing thereof, particularly provides an ultralow-temperature sintering microwave dielectric material Ca2V2O7-LiF and a preparation method thereof, and aims at solving the problems that an existing microwave dielectric material R2V2O7 (R = Ba, Sr and Ca) is relatively high in sintering temperature and moderate in microwave dielectric property. Compared with pure-phase Ca2V2O7, the ultralow-temperature microwave dielectric material Ca2V2O7-LiF has the advantages that the sintering temperature can be greatly reduced, ultralow-temperature sintering at the temperature of 525-575 DEG C is realized, meanwhile, the microwave dielectric property of the material is remarkably improved, the Q * f value is 31000-46000 GHz, the dielectric constant is 11-12, the temperature coefficient of resonance frequency is-126-115 ppm/DEG C, and the microwave dielectric property of the material is remarkably improved. Particularly, Ca2V2O7-3wt% LiF has excellent microwave dielectric properties after being sintered at 550 DEG C: Q * f is equal to 46476 GHz, epsilon r is equal to 11.83, tauf is equal to-116.43 ppm/DEG C, which is essentially different from those of a common sintering aid which reduces the sintering temperature while sacrificing the material performance; moreover, the preparation process is simple, and large-scale batch production is facilitated; the method has a wide application prospect in the field of ultralow-temperature co-fired ceramics.
本发明属于电子材料及其制造领域，具体提供一种超低温烧结微波介质材料Ca2V2O7‑LiF及其制备方法，用以解决现有微波介质材料R2V2O7(R＝Ba,Sr,and Ca)烧结温度较高且微波介电性能平庸的问题。相比于纯相Ca2V2O7，本发明超低温微波介质材料Ca2V2O7‑LiF能够大大降低烧结温度、实现525～575℃下的超低温烧结，同时，显著提升材料的微波介电性能：Q×f值为31000～46000GHz、介电常数为11‑12、谐振频率温度系数为‑126～‑115ppm/℃，尤其Ca2V2O7‑3wt％LiF在550℃下烧结得到优异的微波介电性能：Q×f＝46476GHz、εr＝11.83、τf＝‑116.43ppm/℃，本质区别于普遍助烧剂降低烧结温度的同时牺牲材料的性能；并且，制备工艺简单、便于大规模批量化生产；在超低温共烧陶瓷领域具有广阔的应用前景。
Ultralow-temperature sintered microwave dielectric material Ca2V2O7-LiF and preparation method thereof
一种超低温烧结微波介质材料Ca2V2O7-LiF及其制备方法
LI BO (Autor:in) / HAN RUYI (Autor:in) / ZHENG YUXIN (Autor:in)
28.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Ultralow-temperature sintered microwave dielectric material and preparation method thereof
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