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US 2019/0161396 A1Published application
Black b-spodumene glass ceramics with an optimized color package
AssigneeCorning Incorporated
InventorsAnthony Vincent DeCeanne, Qiang Fu, Alana Marie Whittier
Life of this patent
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Abstract
A black β-spodumene glass ceramic is provided. The glass ceramic includes β-spodumene as a primary crystal phase and gahnite as a minor crystal phase. The glass ceramic is characterized by the color coordinates: L*: 20.0 to 40.0, a*: −1.0 to 0.5, and b*: −5.0 to 1.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.
Claims49
A glass ceramic, comprising:
- a β-spodumene crystal phase as a primary crystal phase;
- and
- a gahnite crystal phase as a minor crystal phase,
- wherein the glass ceramic is characterized by the following color coordinates:
- L*:
- 20.0 to 40.0;
- a*:
- −1.0 to 0.5;
- and
- b*:
- −5.0 to 1.0.
8 more elements
A glass ceramic, comprising:
- a β-spodumene crystal phase as a primary crystal phase;
- greater than or equal to 0.2 wt % to less than or equal to 3.0 wt % Fe2O3;
- and
- greater than or equal to 0.1 wt % to less than or equal to 2.0 wt % Co3O4,
- wherein the glass ceramic is characterized by the following color coordinates:
- L*:
- 20.0 to 40.0;
- a*:
- −1.0 to 0.5;
- and
- b*:
- −5.0 to 1.0.
9 more elements
A method, comprising:
- nucleating a precursor glass-based article to form a nucleated glass-based article;
- ceramming the nucleated glass-based article to form a glass ceramic,
- wherein the glass ceramic comprises:
- a β-spodumene crystal phase as a primary crystal phase;
- and
- a gahnite crystal phase as a minor crystal phase, and
- the glass ceramic is characterized by the following color coordinates:
- L*:
- 20.0 to 40.0;
- a*:
- −1.0 to 1.0;
- and
- b*:
- −5.0 to 2.0.
11 more elements
A method, comprising:
- nucleating a precursor glass-based article to form a nucleated glass-based article;
- ceramming the nucleated glass-based article to form a glass ceramic,
- wherein the glass ceramic comprises:
- a β-spodumene crystal phase as a primary crystal phase;
- greater than or equal to 0.2 wt % to less than or equal to 3.0 wt % Fe2O3;
- and
- greater than or equal to 0.1 wt % to less than or equal to 2.0 wt % Co3O4,
- the glass ceramic is characterized by the following color coordinates:
- L*:
- 20.0 to 40.0;
- a*:
- −1.0 to 1.0;
- and
- b*:
- −5.0 to 2.0.
12 more elements
A glass, comprising:
- greater than or equal to 60 wt % to less than or equal to 70 wt % SiO2;
- greater than or equal to 15 wt % to less than or equal to 25 wt % Al2O3;
- greater than or equal to 3 wt % to less than or equal to 5 wt % Li2O;
- greater than or equal to 0 wt % to less than or equal to 2 wt % Na2O;
- greater than or equal to 0.5 wt % to less than or equal to 3 wt % MgO;
- greater than or equal to 0.5 wt % to less than or equal to 4 wt % ZnO;
- greater than or equal to 2 wt % to less than or equal to 6 wt % TiO2;
- greater than or equal to 0.1 wt % to less than or equal to 1.0 wt % SnO2;
- greater than or equal to 0.2 wt % to less than or equal to 3.0 wt % Fe2O3;
- and
- greater than or equal to 0.1 wt % to less than or equal to 2.0 wt % Co3O4.
8 more elements
Dependencies are inferred from the claim text.