Corning Incorporated

Shuo Cui

Xiaoju Guo

Peter Joseph Lezzi

Jian Luo

Jill Marie Hall

John Robert Saltzer, Jr

Bin Yang

Carol Ann Click

Mathieu Gerard Jacques Hubert

Gregory William Keyes

James Howard Edmonston

Katherine Weber Kroemer

Richard Alan Shelleman

I-Wen Chou

A method for forming glass ceramic articles includes heating a stack of glass sheets to a nucleation temperature to create a nucleated crystallizable stack of sheets; heating the nucleated crystallizable stack of glass sheets to a crystallization temperature; and maintaining the crystallization temperature for a predetermined period of time to produce the glass-ceramic articles. The stack of glass sheets has a mass index of less than or equal to 35.

Methods for forming glass ceramic articles

Glass stack configurations including a carrier plate, setter plates, and glass sheets for thermal treatment of the glass sheets to form glass ceramic articles are provided. The glass stacking configurations and components described herein are selected to improve thermal uniformity throughout a glass stack during ceramming processes while maintaining or even reducing the stresses in the resultant glass ceramic article. Accordingly, the glass ceramic articles made according to the various embodiments described herein exhibit improved optical qualities and less warp than glass ceramic articles made according to conventional processes. Various embodiments of carrier plates, setter plates, parting agent compositions, and methods of stacking glass sheets are described.

Setter plates and methods of ceramming glass articles using the same

Glass substrates including uniform parting agent coatings and methods of ceramming the same

A glass composition comprises: 50.0 mol % to 70.0 mol % SiO; 10.0 mol % to 25.0 mol % AlO; 0.0 mol % to 5.0 mol % PO; 0.0 mol % to 10.0 mol % BO; 5.0 mol % to 15.0 mol % LiO; 1.0 mol % to 15.0 mol % NaO; and 0.0 mol % to 1.0 mol % KO. The sum of all alkali oxides, RO, present in the glass composition may be in the range from greater than or equal to 11.0 mol % to less than or equal to 23.0 mol %. The sum of AlOand RO present in the glass composition may be in the range from greater than or equal to 26.0 mol % to less than or equal to 40.0 mol %. The glass composition may satisfy the relationship −0.1≤(AlO—(RO+RO))/LiO≤0.3.

Ion exchangeable alkali aluminosilicate glass compositions having improved mechanical durability

A glass composition comprises: 50.0 mol % to 70.0 mol % SiO; 10.0 mol % to 25.0 mol % AlO; 0.0 mol % to 5.0 mol % PO; 0.0 mol % to 10.0 mol % BO; 5.0 mol % to 15.0 mol % LiO; 1.0 mol % to 15.0 mol % NaO; and 0.0 mol % to 1.0 mol % KO. The sum of all alkali oxides, RO, present in the glass composition may be in the range from greater than or equal to 11.0 mol % to less than or equal to 23.0 mol %. The sum of AlOand RO present in the glass composition may be in the range from greater than or equal to 26.0 mol % to less than or equal to 40.0 mol %. The glass composition may satisfy the relationship &#x2212;0.1&#x2264;(AlO&#x2014;(RO+RO))/LiO&#x2264;0.3.

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Burlington, MA, United States of America

Shuo Cui