一种高压断路器用碳陶瓷合闸电阻材料及其制备方法
By using a formulation of kaolin, alumina, and graphite in the carbon ceramic closing resistor material for high-voltage circuit breakers, combined with spark plasma sintering technology, the problems of material densification and performance improvement were solved, achieving a comprehensive performance improvement in low porosity, low resistivity, and high thermal diffusivity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing carbon ceramic closing resistor materials for high-voltage circuit breakers suffer from problems such as long sintering cycles, limited densification, excessive porosity, and a need to improve overall performance. In particular, there is a lack of systematic and in-depth research on the synergistic optimization of formulation design and new sintering processes.
Using kaolin and alumina as the ceramic phase and graphite as the conductive phase, an alumina-mullite composite framework is formed and a stable conductive network is established through spark plasma sintering process, combined with a reasonable formula and sintering temperature control, thereby achieving rapid densification.
It significantly reduces porosity, increases volume resistivity and thermal diffusivity, improves electrical and thermal properties, and ensures the structural stability and continuity of conductive pathways of the material.
Smart Images
Figure CN122403931A_ABST