Glass-ceramics toughened with zirconia
By preparing glass-ceramics containing high molar fractions of tetragonal ZrO2 and lithium disilicate phases, and combining specific heat treatment and ion exchange, the stability problem of the tetragonal ZrO2 phase was solved, the fracture toughness of the material was improved, and it is suitable for consumer electronics and dental applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CORNING INC
- Filing Date
- 2017-06-26
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies struggle to maintain the stability of the tetragonal ZrO2 phase during material processing, resulting in poor toughening effects. Furthermore, the insufficient ZrO2 content in traditional ceramic processing methods affects the fracture toughness of the material.
By preparing glass-ceramics containing high molar fractions of tetragonal ZrO2 and lithium disilicate phase, and combining them with the residual glass phase, the tetragonal ZrO2 is crystallized using a specific heat treatment process, thereby improving the fracture toughness of the material, which can be further enhanced through an ion exchange process.
High fracture toughness of glass-ceramics, ranging from 2 MPa·m1/2 to 10 MPa·m1/2, has been achieved, enhancing the mechanical properties of the material and enabling its application in fields such as consumer electronics devices and dental composites.
Smart Images
Figure CN122102518A_ABST