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US 2019/0161397 A1Published application
Ion exchangeable, transparent gahnite-spinel glass ceramics with high hardness and modulus
AssigneeCorning Incorporated
InventorsGeorge Halsey Beall, John Philip Finkeldey, Alexandra Mitchell, Charlene Marie Smith, Steven Alvin Tietje
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Abstract
A transparent 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 including tetragonal ZrO2. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.
Claims23
A glass-ceramic, comprising:
- a first crystal phase including (MgxZn1−x)Al2O4 where x is less than 1;
- and
- a second crystal phase including tetragonal ZrO2,
- wherein the glass-ceramic is transparent in the visible range.
1 more element
A method, comprising:
- ceramming a precursor glass to form a glass ceramic that is transparent in the visible range,
- wherein the glass ceramic comprises:
- a first crystal phase including (MgxZn1−x)Al2O4 where x is less than 1;
- and
- a second crystal phase including tetragonal ZrO2.
2 more elements
Dependencies are inferred from the claim text.