一种氮化硅陶瓷配方及其配套的用于导轨材料的制备工艺
By using core-shell granulation and dynamic pressure balance sintering processes, combined with in-situ deoxygenation aids and nano-TiC@graphene hybrid fillers, the thermal conductivity and impact brittleness problems of silicon nitride ceramic guide rail materials under high-speed and heavy-load conditions have been solved, achieving improvements in high thermal conductivity, damping performance, and rolling contact fatigue life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI CHINA CERAMICS NEW MATERIALS CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing silicon nitride ceramic guide rail materials suffer from limited thermal conductivity and impact brittleness due to high stiffness under high-speed and heavy-load conditions, making it impossible to simultaneously meet the requirements of surface wear resistance and core shock absorption.
By employing a core-shell granulation and dynamic pressure equilibrium sintering process, combined with in-situ deoxygenation aids, nano-TiC@graphene hybrid fillers, and high-nitrogen potential liquid phase regulators, a gradient dense structure with an outer hardness and an inner toughness is constructed. Through the anchoring modification of the nano-TiC@graphene hybrid fillers at the grain boundaries and the lubrication properties of graphene, the material achieves high thermal conductivity and damping performance.
It significantly improves the thermal conductivity and damping performance of the guide rail material, enhances the impact resistance and fatigue life of the rolling elements, and achieves a balance between mechanical properties and functional characteristics.
Smart Images
Figure CN122187500B_ABST