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Strontium cerate microwave dielectric ceramic material with high quality factor and preparation method thereof
The invention relates to the field of material science, and aims to provide a strontium cerate microwave dielectric ceramic material with a high quality factor and a preparation method thereof. The preparation method comprises the following steps of: doping a composite additive Li2CO3-Bi2O3 into a ceramic base material Sr2CeO4 so as to reduce the sintering temperature to 875-1100DEG C; the chemical expression of the dielectric ceramic material is as follows: (100-a)wt% Sr2CeO4+a wt% Li2CO3-Bi2O3, wherein a is greater than 0 and less than or equal to 4, and the mass ratio of Li2CO3 to Bi2O3 isequal to x:y=0.25-4. By reducing the sintering temperature of the Sr2CeO4 ceramic, abnormal growth of ceramic grains is avoided, and the ceramic crystal structure stability and excellent microwave dielectric properties are maintained. The preparation method is simple in preparation process, low in cost and good in repeatability, is suitable for large-scale production, and the strontium cerate microwave dielectric ceramic material has a wide application prospect in the field of microwave components like filters, antennas and dielectric substrates.
本发明涉及材料科学领域，旨在提供一种一种高品质因数铈酸锶微波介质陶瓷材料及其制备方法。是在陶瓷基料SrCeO中掺杂复合助剂LiCO‑BiO，以降低烧结温度至875～1100℃；该介质陶瓷材料的化学表达式为：(100‑a)wt％SrCeO+a wt％LiCO‑BiO；其中，0﹤a≤4，LiCO:BiO的质量比＝x:y＝0.25～4。本发明通过降低SrCeO陶瓷的烧结温度，避免陶瓷晶粒异常长大，并保持陶瓷晶体结构稳定性和优异的微波介电性能。本发明制备工艺简单、成本低、重复性较好，适用于大规模生产，在滤波器、天线、介质基片等微波元器件领域具有广阔的应用前景。
Strontium cerate microwave dielectric ceramic material with high quality factor and preparation method thereof
The invention relates to the field of material science, and aims to provide a strontium cerate microwave dielectric ceramic material with a high quality factor and a preparation method thereof. The preparation method comprises the following steps of: doping a composite additive Li2CO3-Bi2O3 into a ceramic base material Sr2CeO4 so as to reduce the sintering temperature to 875-1100DEG C; the chemical expression of the dielectric ceramic material is as follows: (100-a)wt% Sr2CeO4+a wt% Li2CO3-Bi2O3, wherein a is greater than 0 and less than or equal to 4, and the mass ratio of Li2CO3 to Bi2O3 isequal to x:y=0.25-4. By reducing the sintering temperature of the Sr2CeO4 ceramic, abnormal growth of ceramic grains is avoided, and the ceramic crystal structure stability and excellent microwave dielectric properties are maintained. The preparation method is simple in preparation process, low in cost and good in repeatability, is suitable for large-scale production, and the strontium cerate microwave dielectric ceramic material has a wide application prospect in the field of microwave components like filters, antennas and dielectric substrates.
本发明涉及材料科学领域，旨在提供一种一种高品质因数铈酸锶微波介质陶瓷材料及其制备方法。是在陶瓷基料SrCeO中掺杂复合助剂LiCO‑BiO，以降低烧结温度至875～1100℃；该介质陶瓷材料的化学表达式为：(100‑a)wt％SrCeO+a wt％LiCO‑BiO；其中，0﹤a≤4，LiCO:BiO的质量比＝x:y＝0.25～4。本发明通过降低SrCeO陶瓷的烧结温度，避免陶瓷晶粒异常长大，并保持陶瓷晶体结构稳定性和优异的微波介电性能。本发明制备工艺简单、成本低、重复性较好，适用于大规模生产，在滤波器、天线、介质基片等微波元器件领域具有广阔的应用前景。
Strontium cerate microwave dielectric ceramic material with high quality factor and preparation method thereof
一种高品质因数铈酸锶微波介质陶瓷材料及其制备方法
ZHANG QILONG (Autor:in) / ZHOU FUMING (Autor:in) / WANG HAO (Autor:in) / YANG HUI (Autor:in)
08.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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