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Lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and a preparation method thereof. The chemical expression of the ceramic is Li3Mg2Nb1-x(Al1/3W2/3)xO6, and x is larger than or equal to 0.02 and smaller than or equal to 0.08. The preparation method comprises the following steps: by adopting asolid-phase synthesis method, mixing Li2CO3, MgO, Nb2O5, Al2O3 and WO3 according to a stoichiometric ratio, carrying out ball milling, drying and sieving, presintering at 925-1000 DEG C to obtain presintered powder, performing ball milling again, drying, sieving and granulating, pressing into a green body, sintering the green body at 1075-1175 DEG C, keeping the temperature, and cooling to room temperature to obtain the required microwave dielectric ceramic. The microwave dielectric ceramic has the advantages of excellent microwave dielectric properties, low cost, simple preparation technique,no toxicity or pollution, and wide application prospects.
本发明属于陶瓷材料技术领域，公开了一种锂镁铌铝钨系微波介质陶瓷及其制备方法，陶瓷化学表达式为LiMgNb(AlW)O，其中0.02≤x≤0.08；采用固相合成法，将LiCO、MgO、NbO、AlO、WO按化学计量比混合；经球磨、烘干、过筛后在925‑1000℃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；坯体在1075℃～1175℃烧结，保温后降至室温制得所需微波介质陶瓷。本发明的微波介质陶瓷具有优异的微波介电性能，且成本低，制备工艺简单，无毒无污染，具有广泛的应用前景。
Lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and discloses a lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and a preparation method thereof. The chemical expression of the ceramic is Li3Mg2Nb1-x(Al1/3W2/3)xO6, and x is larger than or equal to 0.02 and smaller than or equal to 0.08. The preparation method comprises the following steps: by adopting asolid-phase synthesis method, mixing Li2CO3, MgO, Nb2O5, Al2O3 and WO3 according to a stoichiometric ratio, carrying out ball milling, drying and sieving, presintering at 925-1000 DEG C to obtain presintered powder, performing ball milling again, drying, sieving and granulating, pressing into a green body, sintering the green body at 1075-1175 DEG C, keeping the temperature, and cooling to room temperature to obtain the required microwave dielectric ceramic. The microwave dielectric ceramic has the advantages of excellent microwave dielectric properties, low cost, simple preparation technique,no toxicity or pollution, and wide application prospects.
本发明属于陶瓷材料技术领域，公开了一种锂镁铌铝钨系微波介质陶瓷及其制备方法，陶瓷化学表达式为LiMgNb(AlW)O，其中0.02≤x≤0.08；采用固相合成法，将LiCO、MgO、NbO、AlO、WO按化学计量比混合；经球磨、烘干、过筛后在925‑1000℃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；坯体在1075℃～1175℃烧结，保温后降至室温制得所需微波介质陶瓷。本发明的微波介质陶瓷具有优异的微波介电性能，且成本低，制备工艺简单，无毒无污染，具有广泛的应用前景。
Lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and preparation method thereof
一种锂镁铌铝钨系微波介质陶瓷及其制备方法
ZHANG PING (Autor:in) / SUN KEXIN (Autor:in)
19.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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