A barium titanate ceramic capacitor dielectric and a microwave sintering method and capacitor thereof
The microwave sintering method solved the problems of long sintering time and austenitic ripening in the preparation of barium titanate ceramic capacitor dielectric, achieving efficient preparation and excellent grain uniformity, and improving the product's resistance to electric field shock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- KUNSHAN QINGYUAN ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2026-05-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing barium titanate ceramic capacitor dielectrics suffer from long sintering times, low efficiency, and a tendency to exhibit austenitization, leading to abnormal grain growth and affecting product uniformity and reliability.
The microwave sintering method is adopted. The first microwave sintering is used to remove the binder, and the second microwave sintering is used to densify the material. The volumetric heating characteristics of microwaves enable the green body to heat up rapidly and uniformly inside and outside, shorten the sintering cycle, limit the residence time of grains at high temperature, and suppress the austenitic ripening phenomenon.
It significantly improves the preparation efficiency, reduces energy consumption, and the prepared barium titanate ceramic capacitor dielectric has a narrow grain size distribution, good uniformity, and strong resistance to electric field shock.
Smart Images
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