Intermediate to high CTE glasses and glass articles comprising the same
First Claim
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1. A glass composition comprising:
- about 60 mol % to about 75 mol % SiO2,8 mol % to 11 mol % Al2O3,8 mol % to 10 mol % B2O3,0 mol % to about 1 mol % Na2O,about 1 mol % to about 18 mol % K2O,0 mol % to about 7 mol % MgO,0 mol % to about 9 mol % CaO,about 1 mol % to about 8 mol % SrO,0 mol % to about 4 mol % BaO, andabout 3 mol % to about 16 mol % R′
O, wherein R′
O comprises the mol % of MgO, CaO,SrO, and BaO in the composition.
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Abstract
Intermediate to high CTE glass compositions and laminates formed from the same are described. The glasses described herein have properties, such as liquidus viscosity or liquidus temperature, which make them particularly well suited for use in fusion forming processes, such as the fusion down draw process and/or the fusion lamination process. Further, the glass composition may be used in a laminated glass article, such as a laminated glass article formed by a fusion laminate process, to provide strengthened laminates via clad compression as a result of CTE mismatch between the core glass and clad glass.
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Citations
13 Claims
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1. A glass composition comprising:
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about 60 mol % to about 75 mol % SiO2, 8 mol % to 11 mol % Al2O3, 8 mol % to 10 mol % B2O3, 0 mol % to about 1 mol % Na2O, about 1 mol % to about 18 mol % K2O, 0 mol % to about 7 mol % MgO, 0 mol % to about 9 mol % CaO, about 1 mol % to about 8 mol % SrO, 0 mol % to about 4 mol % BaO, and about 3 mol % to about 16 mol % R′
O, wherein R′
O comprises the mol % of MgO, CaO,SrO, and BaO in the composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification