Fracture resistant stress profiles in glasses
Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.
1. A glass-based article, comprising:
a glass-based substrate comprising opposing first and second surfaces defining a substrate thickness (t), wherein t is greater than or equal to 0.4 mm and less than or equal to 1.3 mm; and
a stress profile comprising:
a depth of compression (DOC) that is greater than or equal to 0.15t;
a stress slope at DOC that is 1.5 MPa/micron or less;
an absolute value of stress integral in one compression zone that is in the range of from 4 MPa*mm to 20 MPa*mm;
a compressive stress at a knee (CS k ) of greater than or equal to 165 MPa; and
the DOC is located at a depth of greater than 150 microns.
2. The glass-based article of claim 1 , comprising a peak compressive stress (CS) greater than or equal to 1000 MPa.
3. The glass-based article of claim 1 , comprising a compressive stress at a knee (CS k ) greater than or equal to 170 MPa.
4. The glass-based article of claim 1 , wherein the DOC is located at a depth of 160 microns or deeper.
5. The glass-based article of claim 1 , wherein a central composition at the center of the glass-based article comprises lithium and a Li 2 O/Na 2 O molar ratio of greater than or equal to 0.65 and less than or equal to 1.2.
6. The glass-based article of claim 1 , wherein t is greater than or equal to 0.5 mm and less than or equal to 0.8 mm.
7. The glass-based article of claim 1 , wherein a spike depth of layer (DOL sp ) is greater than or equal to 7 micrometers and less than or equal to 11 micrometers.
8. A consumer electronic product comprising:
a housing comprising a front surface, a back surface, and side surfaces;
electrical components provided at least partially within the housing, the electrical components comprising at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing; and
a cover disposed over the display;
wherein at least a portion of at least one of the housing and the cover comprises the glass-based article of one of claim 1 .