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Temperature stabilizing type high-quality factor microwave dielectric ceramic Nd2La2W3O15 and preparation method thereof
The invention discloses a temperature stabilizing type high-quality factor ultralow dielectric constant microwave dielectric ceramic Nd2La23O15 and preparation method thereof. The method comprises the following steps: (1) weighing and burdening original Nd2O3, La2O3 and WO3 powders with purity of 99.9% or more according to the composition Nd2La2W3O15; (2) carrying out wet-type ball-milling mixing on the raw materials in the step (1) for 12 hours wherein a ball-milling medium is distilled water, preburning for 6 hours in atmospheric environment at 1080 DEG C after drying; (3) adding an adhesive in the powder prepared in the step (2) and pelleting, carrying compressed molding, sintering for 4 hours in the atmospheric environment at 1130-1180 DEG C, wherein the adhesive is a 5% polyvinyl alcohol solution, and the adding amount of the polyvinyl alcohol is 3% of the total mass of the powder. The prepared ceramic is good in sintering, the dielectric constant achieves 9.6-10.2, the quality factor Qf value reaches up to 142000-185000GHz, the temperature coefficient of resonance frequency is small, and the ceramic has great application value in the industry.
Temperature stabilizing type high-quality factor microwave dielectric ceramic Nd2La2W3O15 and preparation method thereof
The invention discloses a temperature stabilizing type high-quality factor ultralow dielectric constant microwave dielectric ceramic Nd2La23O15 and preparation method thereof. The method comprises the following steps: (1) weighing and burdening original Nd2O3, La2O3 and WO3 powders with purity of 99.9% or more according to the composition Nd2La2W3O15; (2) carrying out wet-type ball-milling mixing on the raw materials in the step (1) for 12 hours wherein a ball-milling medium is distilled water, preburning for 6 hours in atmospheric environment at 1080 DEG C after drying; (3) adding an adhesive in the powder prepared in the step (2) and pelleting, carrying compressed molding, sintering for 4 hours in the atmospheric environment at 1130-1180 DEG C, wherein the adhesive is a 5% polyvinyl alcohol solution, and the adding amount of the polyvinyl alcohol is 3% of the total mass of the powder. The prepared ceramic is good in sintering, the dielectric constant achieves 9.6-10.2, the quality factor Qf value reaches up to 142000-185000GHz, the temperature coefficient of resonance frequency is small, and the ceramic has great application value in the industry.
Temperature stabilizing type high-quality factor microwave dielectric ceramic Nd2La2W3O15 and preparation method thereof
FANG LIANG (Autor:in) / XIANG HUAICHENG (Autor:in) / SU HEPING (Autor:in)
03.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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