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Low-dielectric high-entropy high-Q-value microwave dielectric ceramic material and preparation method thereof
The invention relates to the technical field of electronic information functional materials, in particular to a low-dielectric high-entropy high-Q-value microwave dielectric ceramic material and a preparation method thereof, the chemical formula of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material is (Y0.2 B0.2 C0.2 D0.2 E0.2) 2BaZn1-xMgxO5, B, C, D and E are selected from one of La-series rare elements, and x is larger than 0 and smaller than 0.1, the invention further provides a preparation method of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material, and the preparation method of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material is applied to the field of electronic information functional materials. Comprising the steps of burdening, ball milling, drying and sieving, pre-sintering, granulating, compression molding, long-time calcining and annealing. The prepared material has a high-entropy pure-phase orthogonal crystal structure, is highly compact in microstructure, free of pores and microcracks, high in quality factor and small in temperature coefficient of resonance frequency, the dielectric constant ranges from 14 to 18, the high Q * f value ranges from 30,000 GHz to 70,000 GHz, and the tau f value ranges from-30 ppm/DEG C to-8 ppm/DEG C and is adjustable. The formula does not contain volatile toxic metals such as Pb, Cd and the like, is stable in performance and is suitable for a high-frequency microwave communication system.
本发明涉及电子信息功能材料技术领域，尤其涉及一种低介电高熵高Q值微波介质陶瓷材料及其制备方法，化学式为(Y0.2B0.2C0.2D0.2E0.2)2BaZn1‑xMgxO5，其中，B、C、D、E选自La系稀有元素中的一种，0＜x＜0.1，发明还提供一种低介电高熵高Q值微波介质陶瓷材料的制备方法，包括配料、球磨、烘干过筛、预烧、造粒、模压成型、长时煅烧并退火。本发明制得的材料具有高熵化的纯相正交晶体结构，微观形貌高度致密、无气孔和无微裂纹，具有高品质因数和小的谐振频率温度系数，介电常数在14~18之间，高Q×f值在30,000到70,000 GHz之间，τf值在‑30~‑8 ppm/°C之间可调。配方中不含Pb，Cd等挥发性有毒金属，性能稳定，适用于高频化微波通信系统。
Low-dielectric high-entropy high-Q-value microwave dielectric ceramic material and preparation method thereof
The invention relates to the technical field of electronic information functional materials, in particular to a low-dielectric high-entropy high-Q-value microwave dielectric ceramic material and a preparation method thereof, the chemical formula of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material is (Y0.2 B0.2 C0.2 D0.2 E0.2) 2BaZn1-xMgxO5, B, C, D and E are selected from one of La-series rare elements, and x is larger than 0 and smaller than 0.1, the invention further provides a preparation method of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material, and the preparation method of the low-dielectric high-entropy high-Q-value microwave dielectric ceramic material is applied to the field of electronic information functional materials. Comprising the steps of burdening, ball milling, drying and sieving, pre-sintering, granulating, compression molding, long-time calcining and annealing. The prepared material has a high-entropy pure-phase orthogonal crystal structure, is highly compact in microstructure, free of pores and microcracks, high in quality factor and small in temperature coefficient of resonance frequency, the dielectric constant ranges from 14 to 18, the high Q * f value ranges from 30,000 GHz to 70,000 GHz, and the tau f value ranges from-30 ppm/DEG C to-8 ppm/DEG C and is adjustable. The formula does not contain volatile toxic metals such as Pb, Cd and the like, is stable in performance and is suitable for a high-frequency microwave communication system.
本发明涉及电子信息功能材料技术领域，尤其涉及一种低介电高熵高Q值微波介质陶瓷材料及其制备方法，化学式为(Y0.2B0.2C0.2D0.2E0.2)2BaZn1‑xMgxO5，其中，B、C、D、E选自La系稀有元素中的一种，0＜x＜0.1，发明还提供一种低介电高熵高Q值微波介质陶瓷材料的制备方法，包括配料、球磨、烘干过筛、预烧、造粒、模压成型、长时煅烧并退火。本发明制得的材料具有高熵化的纯相正交晶体结构，微观形貌高度致密、无气孔和无微裂纹，具有高品质因数和小的谐振频率温度系数，介电常数在14~18之间，高Q×f值在30,000到70,000 GHz之间，τf值在‑30~‑8 ppm/°C之间可调。配方中不含Pb，Cd等挥发性有毒金属，性能稳定，适用于高频化微波通信系统。
Low-dielectric high-entropy high-Q-value microwave dielectric ceramic material and preparation method thereof
一种低介电高熵高Q值微波介质陶瓷材料及其制备方法
ZHANG XING (Autor:in) / HAN YUXUAN (Autor:in) / LEI QUANFAN (Autor:in) / YANG QIHANG (Autor:in)
12.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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