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Low-dielectric low-loss dielectric material and preparation method thereof
The invention belongs to the technical field of electronic ceramic materials, and discloses a low-dielectric low-loss dielectric material and a preparation method thereof, the chemical formula is Li3Mg2Nb1-xMxO6, x is greater than or equal to 0.02 and less than or equal to 0.08, and M is (Li1/5W4/5) or (Mg1/4W3/4). The preparation method adopts a solid-phase synthesis method and comprises the following steps: mixing Li2CO3, MgO, Nb2O5 and WO3 according to a stoichiometric ratio, carrying out ball milling, drying, sieving and presintering to obtain presintered powder, performing ball milling again, drying, sieving and granulating, pressing into a green body, sintering the green body, keeping the temperature, and cooling to room temperature to obtain the required microwave dielectric ceramic. The microwave dielectric property of the lithium-magnesium-niobium ceramic is effectively improved, the optimal sintering temperature is reduced, and the novel lithium-magnesium-niobium dielectric material which is low in dielectric constant and loss and suitable for high-frequency signal transmission is obtained. In addition, the ceramic system is non-toxic and pollution-free, and meets the environmental protection requirement; and the preparation process is simple, low in cost and suitable for large-scale production, and can be used as a packaging material for substrates and the like.
本发明属于电子陶瓷材料技术领域，公开了一种低介低损耗介质材料及其制备方法，化学式为LiMgNbMO，其中0.02≤x≤0.08，M为(LiW)或(MgW)；采用固相合成法，将LiCO、MgO、NbO、WO按化学计量比混合；经球磨、烘干、过筛后预烧得到预烧粉末；再次球磨、烘干、过筛后进行造粒，再压制成坯体；坯体烧结，保温后降至室温制得所需微波介质陶瓷。本发明有效改善了锂镁铌陶瓷的微波介电性能，并降低最佳烧结温度，得到一种低介低损耗，适用于高频信号传输的新型锂镁铌系介质材料。此外，该陶瓷体系无毒，无污染，符合环保要求；且制备工艺简单，成本低，适用于规模化生产，可作为基板等封装材料。
Low-dielectric low-loss dielectric material and preparation method thereof
The invention belongs to the technical field of electronic ceramic materials, and discloses a low-dielectric low-loss dielectric material and a preparation method thereof, the chemical formula is Li3Mg2Nb1-xMxO6, x is greater than or equal to 0.02 and less than or equal to 0.08, and M is (Li1/5W4/5) or (Mg1/4W3/4). The preparation method adopts a solid-phase synthesis method and comprises the following steps: mixing Li2CO3, MgO, Nb2O5 and WO3 according to a stoichiometric ratio, carrying out ball milling, drying, sieving and presintering to obtain presintered powder, performing ball milling again, drying, sieving and granulating, pressing into a green body, sintering the green body, keeping the temperature, and cooling to room temperature to obtain the required microwave dielectric ceramic. The microwave dielectric property of the lithium-magnesium-niobium ceramic is effectively improved, the optimal sintering temperature is reduced, and the novel lithium-magnesium-niobium dielectric material which is low in dielectric constant and loss and suitable for high-frequency signal transmission is obtained. In addition, the ceramic system is non-toxic and pollution-free, and meets the environmental protection requirement; and the preparation process is simple, low in cost and suitable for large-scale production, and can be used as a packaging material for substrates and the like.
本发明属于电子陶瓷材料技术领域，公开了一种低介低损耗介质材料及其制备方法，化学式为LiMgNbMO，其中0.02≤x≤0.08，M为(LiW)或(MgW)；采用固相合成法，将LiCO、MgO、NbO、WO按化学计量比混合；经球磨、烘干、过筛后预烧得到预烧粉末；再次球磨、烘干、过筛后进行造粒，再压制成坯体；坯体烧结，保温后降至室温制得所需微波介质陶瓷。本发明有效改善了锂镁铌陶瓷的微波介电性能，并降低最佳烧结温度，得到一种低介低损耗，适用于高频信号传输的新型锂镁铌系介质材料。此外，该陶瓷体系无毒，无污染，符合环保要求；且制备工艺简单，成本低，适用于规模化生产，可作为基板等封装材料。
Low-dielectric low-loss dielectric material and preparation method thereof
一种低介低损耗介质材料及其制备方法
ZHANG PING (author) / SUN KEXIN (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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