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Method for preparing barium-samarium-titanium microwave dielectric ceramic by reactive sintering
The invention discloses a method for preparing barium-samarium-titanium microwave dielectric ceramics by reactive sintering, and belongs to the field of microwave dielectric ceramics. The microwave dielectric ceramic is prepared by adopting a reaction sintering method, and the method comprises the following steps: proportioning BaCO3, Sm2O3 and TiO2 according to a chemical formula ratio, carrying out wet ball milling, drying, granulating and sieving, pressing into a cylindrical green body, and sintering to obtain the microwave dielectric ceramic. The chemical formula of the prepared barium samarium titanium system microwave dielectric ceramic is Ba4Sm28/3Ti18O54, the relative dielectric constant is 68.56 to 80.26, the quality factor is 8342 to 9519 GHz, and the temperature coefficient of resonance frequency is-10.9 ppm/DEG C to-7.9 ppm/DEG C. According to the reaction sintering method provided by the invention, powder pre-sintering, secondary ball milling and drying in a solid-phase sintering method are omitted, the preparation process of the barium-samarium-titanium series ceramic is greatly simplified, the production time and cost are saved, and the reaction sintering method of the high-dielectric barium-samarium-titanium series microwave dielectric ceramic, which is simple in process and good in temperature stability, is provided; wide application prospects are realized.
本发明公开了一种采用反应烧结制备钡钐钛系微波介质陶瓷的方法，属于微波介质陶瓷领域。本发明采用反应烧结法制备微波介质陶瓷，其步骤包括：将BaCO3、Sm2O3、TiO2按化学式配比进行配料，经过湿式球磨、烘干、造粒及过筛后压制成圆柱形坯体，然后烧结而成。本发明制备的钡钐钛系微波介质陶瓷的的组成化学式为Ba4Sm28/3Ti18O54，相对介电常数为68.56~80.26，品质因数为8342~9519 GHz，谐振频率温度系数为‑10.9~‑7.9ppm/℃。本发明提供的反应烧结法省去了固相烧结法中的粉料预烧、二次球磨及烘干，极大的简化了钡钐钛系陶瓷的制备工艺，节省了生产时间及成本，提供了一种工艺简单、温度稳定性好的高介钡钐钛系微波介质陶瓷的反应烧结方法，具有广泛的应用前景。
Method for preparing barium-samarium-titanium microwave dielectric ceramic by reactive sintering
The invention discloses a method for preparing barium-samarium-titanium microwave dielectric ceramics by reactive sintering, and belongs to the field of microwave dielectric ceramics. The microwave dielectric ceramic is prepared by adopting a reaction sintering method, and the method comprises the following steps: proportioning BaCO3, Sm2O3 and TiO2 according to a chemical formula ratio, carrying out wet ball milling, drying, granulating and sieving, pressing into a cylindrical green body, and sintering to obtain the microwave dielectric ceramic. The chemical formula of the prepared barium samarium titanium system microwave dielectric ceramic is Ba4Sm28/3Ti18O54, the relative dielectric constant is 68.56 to 80.26, the quality factor is 8342 to 9519 GHz, and the temperature coefficient of resonance frequency is-10.9 ppm/DEG C to-7.9 ppm/DEG C. According to the reaction sintering method provided by the invention, powder pre-sintering, secondary ball milling and drying in a solid-phase sintering method are omitted, the preparation process of the barium-samarium-titanium series ceramic is greatly simplified, the production time and cost are saved, and the reaction sintering method of the high-dielectric barium-samarium-titanium series microwave dielectric ceramic, which is simple in process and good in temperature stability, is provided; wide application prospects are realized.
本发明公开了一种采用反应烧结制备钡钐钛系微波介质陶瓷的方法，属于微波介质陶瓷领域。本发明采用反应烧结法制备微波介质陶瓷，其步骤包括：将BaCO3、Sm2O3、TiO2按化学式配比进行配料，经过湿式球磨、烘干、造粒及过筛后压制成圆柱形坯体，然后烧结而成。本发明制备的钡钐钛系微波介质陶瓷的的组成化学式为Ba4Sm28/3Ti18O54，相对介电常数为68.56~80.26，品质因数为8342~9519 GHz，谐振频率温度系数为‑10.9~‑7.9ppm/℃。本发明提供的反应烧结法省去了固相烧结法中的粉料预烧、二次球磨及烘干，极大的简化了钡钐钛系陶瓷的制备工艺，节省了生产时间及成本，提供了一种工艺简单、温度稳定性好的高介钡钐钛系微波介质陶瓷的反应烧结方法，具有广泛的应用前景。
Method for preparing barium-samarium-titanium microwave dielectric ceramic by reactive sintering
一种采用反应烧结制备钡钐钛系微波介质陶瓷的方法
WANG GENG (author) / LI ZEPING (author) / WANG HUIFENG (author)
2024-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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