Lithium aluminum silicate glass ceramics
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SCHOTT AG
- Filing Date
- 2023-09-15
- Publication Date
- 2026-06-16
AI Technical Summary
Existing lithium aluminum silicate glass-ceramics for cooktops face challenges in achieving good melting properties and thermal shock resistance while minimizing lithium content due to rising lithium prices, leading to increased production costs and reduced performance.
A lithium aluminum silicate glass ceramic composition with specific weight percentages of SiO2, Al2O3, Li2O, and other components, including MgO, ZrO2, TiO2, and ZnO, is formulated to achieve a thermal expansion coefficient of -0.5 to 1.9 ppm/K, ensuring high thermal shock resistance and low processing temperatures, thereby improving manufacturability and reducing lithium usage.
The new glass ceramic composition provides high thermal shock resistance, long-term thermal stability, and cost-effectiveness by optimizing thermal expansion coefficients and processing points, making it suitable for various heating elements without compromising mechanical strength or thermal resistance.