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Microwave dielectric ceramic preparation method and microwave dielectric ceramic
The invention provides a microwave dielectric ceramic preparation method and a microwave dielectric ceramic, and the method comprises the following steps: according to the chemical proportion of Ba [(CoxZn1-x) 1/3Nb2/3] O3, respectively weighing main raw materials BaCO3, Co3O4, ZnO and Nb2O5, wherein (x = 0.5-0.8); grinding the main raw materials, and drying and crushing main raw material slurry obtained by grinding to obtain dry powder; calcining the dry powder, and adding copper oxide and strontium oxide into the calcined dry powder to obtain a doping material; grinding the doping material, adding a sizing material into the ground doping material, and carrying out spray granulation, sieving and tabletting treatment on the doping material doped with the sizing material to obtain a green body; and degumming the green body, and sintering the degummed green body to obtain the barium-cobalt-zinc-niobium-based microwave dielectric ceramic. In the powder preparation process, doping agents (copper oxide and strontium oxide) are introduced, sintering is promoted, the sintering temperature and time are reduced, the temperature coefficient of resonance frequency is adjusted, meanwhile, the dielectric constant stability is guaranteed, and the dielectric property is improved.
本发明所提供的一种微波介质陶瓷制备方法及微波介质陶瓷，方法包括：按照Ba[(CoxZn1‑x)1/3Nb2/3]O3的化学配比，分别称取主原料BaCO3、Co3O4、ZnO、Nb2O5，其中，x＝0.5‑0.8；将所述主原料进行研磨，将研磨得到的主原料浆料烘干、粉碎，得到干粉料；煅烧所述干粉料，并向煅烧后的干粉料中加入氧化铜和氧化锶，得到掺杂料；将所述掺杂料进行研磨，向研磨后的掺杂料中加入胶料，并对掺胶后的掺杂料进行喷雾造粒、过筛及压片处理，得到坯体；将所述坯体进行排胶，将排胶后的坯体烧结，得到钡钴锌铌基微波介质陶瓷。本发明通过在粉体制备过程，引入掺杂剂(氧化铜和氧化锶)，促进烧结，降低烧结温度及时间，调节谐振频率温度系数，同时保证了介电常数稳定性，提升介电性能。
Microwave dielectric ceramic preparation method and microwave dielectric ceramic
The invention provides a microwave dielectric ceramic preparation method and a microwave dielectric ceramic, and the method comprises the following steps: according to the chemical proportion of Ba [(CoxZn1-x) 1/3Nb2/3] O3, respectively weighing main raw materials BaCO3, Co3O4, ZnO and Nb2O5, wherein (x = 0.5-0.8); grinding the main raw materials, and drying and crushing main raw material slurry obtained by grinding to obtain dry powder; calcining the dry powder, and adding copper oxide and strontium oxide into the calcined dry powder to obtain a doping material; grinding the doping material, adding a sizing material into the ground doping material, and carrying out spray granulation, sieving and tabletting treatment on the doping material doped with the sizing material to obtain a green body; and degumming the green body, and sintering the degummed green body to obtain the barium-cobalt-zinc-niobium-based microwave dielectric ceramic. In the powder preparation process, doping agents (copper oxide and strontium oxide) are introduced, sintering is promoted, the sintering temperature and time are reduced, the temperature coefficient of resonance frequency is adjusted, meanwhile, the dielectric constant stability is guaranteed, and the dielectric property is improved.
本发明所提供的一种微波介质陶瓷制备方法及微波介质陶瓷，方法包括：按照Ba[(CoxZn1‑x)1/3Nb2/3]O3的化学配比，分别称取主原料BaCO3、Co3O4、ZnO、Nb2O5，其中，x＝0.5‑0.8；将所述主原料进行研磨，将研磨得到的主原料浆料烘干、粉碎，得到干粉料；煅烧所述干粉料，并向煅烧后的干粉料中加入氧化铜和氧化锶，得到掺杂料；将所述掺杂料进行研磨，向研磨后的掺杂料中加入胶料，并对掺胶后的掺杂料进行喷雾造粒、过筛及压片处理，得到坯体；将所述坯体进行排胶，将排胶后的坯体烧结，得到钡钴锌铌基微波介质陶瓷。本发明通过在粉体制备过程，引入掺杂剂(氧化铜和氧化锶)，促进烧结，降低烧结温度及时间，调节谐振频率温度系数，同时保证了介电常数稳定性，提升介电性能。
Microwave dielectric ceramic preparation method and microwave dielectric ceramic
一种微波介质陶瓷制备方法及微波介质陶瓷
WANG YUE (author) / ZHANG RICHENG (author)
2021-11-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Microwave dielectric ceramic preparation method and microwave dielectric ceramic
| European Patent Office | 2020
| European Patent Office | 2022
| European Patent Office | 2020
| European Patent Office | 2020
| European Patent Office | 2022