一种核壳结构碳陶瓷电阻材料、制备方法及电阻
By constructing a core-shell structure and a dual-scale conductive network on the surface of ceramic particles, the problem of conductive path instability in carbon ceramic resistor materials under high current and thermal cycling conditions was solved, thereby improving the stability and reliability of the resistor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
- Filing Date
- 2026-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing carbon ceramic resistor materials have insufficient stability of the conductive path under high current impact and thermal cycling conditions, resulting in large resistance fluctuations and insufficient reliability.
A core-shell structured carbon ceramic resistive material is used. A carbon conductive phase is constructed in the ceramic matrix and coated on the surface of the ceramic particles in the form of a coating layer to form a ceramic core-carbon shell structural unit. A two-scale continuous conductive network and gradient pore structure are formed by bidirectional unequal pressure molding and segmented sintering process.
It achieves high resistance stability and high reliability under high current and thermal shock conditions, small resistance fluctuation, uniform heat dissipation, and extends the service life of the material.
Smart Images
Figure CN121824097B_ABST