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Ultralow dielectric loss microwave dielectric high-entropy ceramic material and preparation method thereof
The invention relates to the technical field of ceramic materials, in particular to an ultralow-dielectric-loss microwave dielectric high-entropy ceramic material and a preparation method thereof.The preparation method comprises the specific steps that original powder of Nd2O3, Eu2O3, Y2O3, Ho2O3, Yb2O3 and NH4VO3 is weighed according to the proportion and subjected to wet grinding treatment, presintering is conducted after drying, presintering powder is obtained, then a binder is added, granulation is conducted, and the ultralow-dielectric-loss microwave dielectric high-entropy ceramic material is obtained; and performing compression molding and sintering to obtain the microwave dielectric high-entropy ceramic material with ultralow dielectric loss. Through verification, the ultralow-dielectric-loss microwave dielectric high-entropy ceramic material prepared by the preparation method disclosed by the invention has the advantages that the temperature coefficient of resonance frequency tau f is small (-35.3 to-37.3 ppm/DEG C), and the temperature stability is good; the dielectric constant reaches 11.36-11.55, the quality factor Q * f value reaches up to 67700-76320GHz, and the Q * f value is greater than the Q * f value (lt) of a traditional material; 30000GHz) is increased by more than two times; the method can be widely used for manufacturing microwave devices such as various dielectric antenna substrates, resonators and filters.
本发明涉及陶瓷材料技术领域，尤其涉及一种超低介电损耗微波介质高熵陶瓷材料及其制备方法，具体通过将Nd2O3、Eu2O3、Y2O3、Ho2O3、Yb2O3和NH4VO3的原始粉末按配比称量湿磨处理，烘干后预烧获得预烧结粉末，再加入粘结剂并造粒，压制成型后烧结制得超低介电损耗微波介质高熵陶瓷材料。经验证，本发明制备的超低介电损耗微波介质高熵陶瓷材料，其谐振频率温度系数τf小(‑35.3～‑37.3ppm/℃)，温度稳定性好；其介电常数达到11.36～11.55，品质因数Q×f值高达67700‑76320GHz，比传统材料的Q×f值(<30000GHz)高2倍以上；可广泛用于各种介质天线基板、谐振器和滤波器等微波器件的制造。
Ultralow dielectric loss microwave dielectric high-entropy ceramic material and preparation method thereof
The invention relates to the technical field of ceramic materials, in particular to an ultralow-dielectric-loss microwave dielectric high-entropy ceramic material and a preparation method thereof.The preparation method comprises the specific steps that original powder of Nd2O3, Eu2O3, Y2O3, Ho2O3, Yb2O3 and NH4VO3 is weighed according to the proportion and subjected to wet grinding treatment, presintering is conducted after drying, presintering powder is obtained, then a binder is added, granulation is conducted, and the ultralow-dielectric-loss microwave dielectric high-entropy ceramic material is obtained; and performing compression molding and sintering to obtain the microwave dielectric high-entropy ceramic material with ultralow dielectric loss. Through verification, the ultralow-dielectric-loss microwave dielectric high-entropy ceramic material prepared by the preparation method disclosed by the invention has the advantages that the temperature coefficient of resonance frequency tau f is small (-35.3 to-37.3 ppm/DEG C), and the temperature stability is good; the dielectric constant reaches 11.36-11.55, the quality factor Q * f value reaches up to 67700-76320GHz, and the Q * f value is greater than the Q * f value (lt) of a traditional material; 30000GHz) is increased by more than two times; the method can be widely used for manufacturing microwave devices such as various dielectric antenna substrates, resonators and filters.
本发明涉及陶瓷材料技术领域，尤其涉及一种超低介电损耗微波介质高熵陶瓷材料及其制备方法，具体通过将Nd2O3、Eu2O3、Y2O3、Ho2O3、Yb2O3和NH4VO3的原始粉末按配比称量湿磨处理，烘干后预烧获得预烧结粉末，再加入粘结剂并造粒，压制成型后烧结制得超低介电损耗微波介质高熵陶瓷材料。经验证，本发明制备的超低介电损耗微波介质高熵陶瓷材料，其谐振频率温度系数τf小(‑35.3～‑37.3ppm/℃)，温度稳定性好；其介电常数达到11.36～11.55，品质因数Q×f值高达67700‑76320GHz，比传统材料的Q×f值(<30000GHz)高2倍以上；可广泛用于各种介质天线基板、谐振器和滤波器等微波器件的制造。
Ultralow dielectric loss microwave dielectric high-entropy ceramic material and preparation method thereof
一种超低介电损耗微波介质高熵陶瓷材料及其制备方法
XIANG HUAICHENG (Autor:in) / ZHANG YUHENG (Autor:in) / ZHOU YANG (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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