Invention Grant
- Patent Title: Ion exchangeable, opaque gahnite-spinel glass ceramics with high hardness and modulus
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Application No.: US16692185Application Date: 2019-11-22
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Publication No.: US11370697B2Publication Date: 2022-06-28
- Inventor: George Halsey Beall , Alexandra Lai Ching Kao Andrews Mitchell , Charlene Marie Smith
- Applicant: CORNING INCORPORATED
- Applicant Address: US NY Corning
- Assignee: CORNING INCORPORATED
- Current Assignee: CORNING INCORPORATED
- Current Assignee Address: US NY Corning
- Main IPC: C03C10/02
- IPC: C03C10/02 ; C03C10/04 ; C03C10/08 ; C03C10/00 ; C03B23/03 ; H05K5/00 ; H05K5/02
Abstract:
An opaque gahnite-spinel glass ceramic is provided. The glass ceramic includes a first crystal phase including (MgxZn1-x)Al2O4 where x is less than 1 and a second crystal phase includes at least one of tetragonal ZrO2, MgTa2O6, mullite, and cordierite. The glass ceramic has a Young's modulus greater than or equal to 90 GPa, and has a hardness greater than or equal to 7.5 GPa. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.
Public/Granted literature
- US20200172432A1 ION EXCHANGEABLE, OPAQUE GAHNITE-SPINEL GLASS CERAMICS WITH HIGH HARDNESS AND MODULUS Public/Granted day:2020-06-04
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