Multiphase ceramic material with high density and excellent electromagnetic shielding performance and low-temperature sintering preparation method thereof
By combining low-temperature sintering technology with oxide additives, the problem of high-temperature sintering of ultra-high temperature ceramic materials has been solved, realizing multiphase ceramic materials with high density and excellent electromagnetic shielding performance, reducing energy consumption and cost, and expanding their application range.
Patent Information
- Application Number
- CN202610173252.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-12
AI Technical Summary
Existing ultra-high temperature ceramic materials require ultra-high temperature sintering above 2000°C during preparation, resulting in high energy consumption and high cost. Furthermore, they are difficult to combine with carbon fibers, which limits their application in lightweight and high-strength electromagnetic shielding materials.
Multiphase ceramic materials are prepared at relatively low temperatures (around 1300℃) by using hot pressing sintering or spark plasma sintering technology combined with oxide additives (such as MgO, SiO2, Al2O3). By introducing oxide additives, the densification temperature of ultra-high temperature ceramics is reduced, and high density and excellent electromagnetic shielding performance are achieved at low temperatures.
It significantly reduces the energy consumption and cost of material preparation, achieves high density and excellent electromagnetic shielding performance, broadens its application in aerospace, electronic communications and other fields, and provides the possibility of composite with carbon fiber reinforcement.