公开(公告)号：US11352291B2

公开(公告)日：2022-06-07

申请号：US16692250

申请日：2019-11-22

Applicant: CORNING INCORPORATED

Inventor： Carol Ann Click ,  Qiang Fu ,  Mathieu Gerard Jacques Hubert ,  Charlene Marie Smith ,  Alana Marie Whittier

IPC: C03C10/00 ,  C03B32/02 ,  C03C3/097 ,  C03C4/02 ,  C03C4/18 ,  C03C21/00 ,  H05K5/00 ,  H05K5/03

Abstract: A black β-spodumene lithium disilicate glass ceramic is provided. The glass ceramic includes at least one of magnetite, β-quartz, cristobalite, and lithium phosphate as a minor crystal phase. The glass ceramic is characterized by the color coordinates: L*: 15.0 to 35.0, a*: −3.0 to 3.0, and b*: −5.0 to 5.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.

公开(公告)号：US20210403373A1

公开(公告)日：2021-12-30

申请号：US17358818

申请日：2021-06-25

Applicant: CORNING INCORPORATED

Inventor： Carol Ann Click ,  Qiang Fu ,  Mathieu Gerard Jacques Hubert ,  Charlene Marie Smith ,  Alana Marie Whittier

IPC: C03C10/00 ,  C03C21/00 ,  C03C4/02

Abstract: A glass-ceramic article comprises: a center-volume composition comprising (on an oxide basis): 55-75 mol % SiO2; 0.2-10 mol % Al2O3; 0-5 mol % B2O3; 15-30 mol % Li2O; 0-2 mol % Na2O; 0-2 mol % K2O; 0-5 mol % MgO; 0-2 mol % ZnO; 0.2-3.0 mol % P2O5; 0.1-10 mol % ZrO2; 0-4 mol % TiO2; and 0-1.0 mol % SnO2. Lithium disilicate and either β-spodumene or β-quartz are the two predominant crystalline phases (by weight) of the glass-ceramic article. The glass-ceramic article further comprises tetragonal ZrO2 as a crystalline phase. The composition of the glass-ceramic article from a primary surface into a thickness of the glass-ceramic article can comprise over 10 mol % Na2O (on an oxide basis), with the mole percentage of Na2O decreasing from the primary surface towards the center-volume. The glass-ceramic article exhibits a ring-on-ring load-to-failure of at least 120 kgf, when the thickness of the glass-ceramic article is 0.3 mm to 2.0 mm.

公开(公告)号：US20200172431A1

公开(公告)日：2020-06-04

申请号：US16692250

申请日：2019-11-22

Applicant: CORNING INCORPORATED

Inventor： Carol Ann Click ,  Qiang Fu ,  Mathieu Gerard Jacques Hubert ,  Charlene Marie Smith ,  Alana Marie Whittier

IPC: C03C10/00 ,  C03C4/02 ,  C03C4/18 ,  C03C3/097 ,  C03B32/02 ,  C03C21/00 ,  H05K5/03 ,  H05K5/00

Abstract: A black β-spodumene lithium disilicate glass ceramic is provided. The glass ceramic includes at least one of magnetite, β-quartz, cristobalite, and lithium phosphate as a minor crystal phase. The glass ceramic is characterized by the color coordinates: L*: 15.0 to 35.0, a*: −3.0 to 3.0, and b*: −5.0 to 5.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.