US 12,404,204 B2
Glasses with modified young's modulus profile
Timothy Michael Gross, Painted Post, NY (US); Adam Robert Sarafian, Corning, NY (US); Jingshi Wu, Painted Post, NY (US); and Zheming Zheng, Horseheads, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 17/610,839
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed May 12, 2020, PCT No. PCT/US2020/032419
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/231959, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/848,770, filed on May 16, 2019.
Prior Publication US 2022/0204386 A1, Jun. 30, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03C 3/097 (2006.01); C03C 4/00 (2006.01); C03C 21/00 (2006.01)
CPC C03C 3/097 (2013.01) [C03C 4/00 (2013.01); C03C 21/007 (2013.01); C03C 2201/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A glass-based article, comprising:
a reduced Young's modulus layer extending from a surface of the glass-based article to a depth of layer;
a hydrogen-containing layer extending from the surface of the glass-based article to a hydrogen depth of layer, wherein a hydrogen concentration of the hydrogen-containing layer decreases from a maximum hydrogen concentration to the hydrogen depth of layer; and
a compressive stress layer from hydrogen species extending from a surface of the glass-based article to a depth of compression,
wherein:
the compressive stress layer comprises a compressive stress greater than or equal to 10 MPa, and the reduced Young's modulus layer comprises a Young's modulus at a depth of 500 nm from the surface that is less than a bulk Young's modulus of a glass having a composition equivalent to the composition at the center of the glass-based article; and
the center of the glass-based article comprises greater than or equal to 10 mol % and less than or equal to 23 mol % K2O and greater than or equal to 2 mol % and less than or equal to 15 mol % P2O5.