Invention Grant
- Patent Title: Low crystallinity glass-ceramics
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Application No.: US15880030Application Date: 2018-01-25
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Publication No.: US10604441B2Publication Date: 2020-03-31
- Inventor: David Eugene Baker , Matthew John Dejneka , Indrajit Dutta , Robert Michael Morena , Charlene Marie Smith
- Applicant: CORNING INCORPORATED
- Applicant Address: US NY Corning
- Assignee: CORNING INCORPORTED
- Current Assignee: CORNING INCORPORTED
- Current Assignee Address: US NY Corning
- Agent Kevin M. Johnson
- Main IPC: C03C10/02
- IPC: C03C10/02 ; C03C10/00 ; C03C3/091 ; C03C3/097 ; C03C4/02 ; C03C21/00 ; C03C3/093

Abstract:
Embodiments of the present disclosure pertain to crystallizable glasses and glass-ceramics that exhibit a black color and are opaque. In one or more embodiments, the crystallizable glasses and glass-ceramics include a precursor glass composition that exhibits a liquidus viscosity of greater than about 20 kPa*s. The glass-ceramics exhibit less than about 20 wt % of one or more crystalline phases, which can include a plurality of crystallites in the Fe2O3—TiO2—MgO system and an area fraction of less than about 15%. Exemplary compositions used in the crystallizable glasses and glass-ceramics include, in mol %, SiO2 in the range from about 50 to about 76, Al2O3 in the range from about 4 to about 25, P2O5+B2O3 in the range from about 0 to about 14, R2O in the range from about 2 to about 20, one or more nucleating agents in the range from about 0 to about 5, and RO in the range from about 0 to about 20.
Public/Granted literature
- US20180148370A1 LOW CRYSTALLINITY GLASS-CERAMICS Public/Granted day:2018-05-31
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