Abstract: A glass composition comprises: 50.0 mol % to 70.0 mol % SiO2; 10.0 mol % to 25.0 mol % Al2O3; 0.0 mol % to 5.0 mol % P2O3; 0.0 mol % to 10.0 mol % B2O3; 5.0 mol % to 15.0 mol % Li2O; 1.0 mol % to 15.0 mol % Na2O; and 0.0 mol % to 1.0 mol % K2O. The sum of all alkali oxides, R2O, 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 Al2O3 and R2O 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<(Al2O3?(R2O+RO))/Li2O<0.3.

Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Abstract: A glass composition includes greater than or equal to 60 mol % to less than or equal to 66 mol % SiO2, greater than or equal to 14 mol % to less than or equal to 16 mol % Al2O3, greater than or equal to 7 mol % to less than or equal to 9 mol % Li2O, greater than or equal to 4 mol % to less than or equal to 6 mol % Na2O, greater than or equal to 0.5 mol % to less than or equal to 3 mol % P2O5, greater than or equal to 0.5 mol % to less than or equal to 6 mol % B2O3; and greater than 0 mol % to less than or equal to 1 mol % TiO2. The glass composition may have a fracture toughness of greater than or equal 0.75 MPa?m. A glass composition includes SiO2, Al2O3, Li2O, Na2O, P2O5, and B2O3, wherein a molar ratio of Li2O/Na2O is greater than or equal to 1.2 to less than or equal to 2.0, the glass has a liquidus viscosity in the range from greater than or equal to 50 kP to less than or equal to 75 kP, and the glass has a KIC fracture toughness greater than or equal to 0.75 MPa·m0.5.

Abstract: Glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t), and a stress profile are disclosed having a thickness (t) of about 3 millimeters or less, and wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent with a slope that is less than about ?0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers. Also disclosed are glass-based articles having a thickness (t) in a range of 0.1 mm and 2 mm; and wherein at least one point of the stress profile in a first thickness range from about 0·t up to 0.020·t and greater than 0.98·t comprises a tangent with a slope of from about ?200 MPa/micrometer to about ?25 MPa/micrometer or about 25 MPa/micrometer to about 200 MPa/micrometer, and wherein all points of the stress profile in a second thickness range from about 0.035·t and less than 0.

Abstract: A colored glass article includes greater than or equal to 50 mol % and less than or equal to 80 mol % SiO2; greater than or equal to 7 mol % and less than or equal to 25 mol % Al2O3; greater than or equal to 1 mol % and less than or equal to 15 mol % B2O3; greater than or equal to 5 mol % and less than or equal to 20 mol % Li2O; greater than or equal to 0.5 mol % and less than or equal to 15 mol % Na2O; greater than 0 mol % and less than or equal to 1 mol % K2O; and greater than or equal to 1×10?6 mol % and less than or equal to 1 mol % Au. R2O—Al2O3 is greater than or equal to ?5 mol % and less than or equal to 7 mol %, R2O being the sum of Li2O, Na2O, and K2O.

Abstract: Glass compositions are provided with low Young's modulus and compatibility with slot drawing techniques, due at least in part to liquidus viscosity and liquidus temperature. When ion-exchanged the resulting glass articles are capable of exhibiting a ratio of a peak compressive stress value in MPa to a Young's modulus value in GPa of 13.0 or more. The glass articles may have a peak compressive stress value in a range of 850 MPa to 1400 MPa. The glass articles are suitable for various high-strength applications, including cover glass applications that experience significant bending stresses during use, for example, cover glasses for flexible displays.

Abstract: Methods of manufacturing a glass-based article includes exposing a glass-based substrate having a lithium aluminosilicate composition to an ion exchange treatment to form the glass-based article. The ion exchange treatment including a molten salt bath having a concentration of a sodium salt in a range from 8 mol % to 100 mol %. The glass-based article includes sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article The glass-based article has compressive stress layer extending from the surface to a spike depth of layer from 4 micrometers to 8 micrometers. The glass-based article includes a molar ratio of potassium oxide (K2O) to sodium oxide (Na2O) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8.

Abstract: A glass article including any one or several of SiO2, Al2O3, B2O3, Li2O, SnO2 and a fusion line. The glass article can also include a liquidus viscosity less than or equal to 100 kP. In some embodiments, the glass article includes, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2.

Abstract: Substantially alkali free glasses are disclosed with can be used to produce substrates for flat panel display devices, e.g., active-matrix liquid crystal displays (AMLCDs). The glasses have high annealing temperatures and Young's modulus. Methods for producing substantially alkali free glasses using a downdraw process (e.g., a fusion process) are also disclosed.

Abstract: A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, from 3 mol % to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, from 0 mol % to 5 mol % P2O5, from 5 mol % to 11 mol % Li2O, less than or equal to 0.2 mol % SnO2, and from 0.5 mol % to 6.5 mol % divalent cation oxides. The glass article has a molar ratio of Al2O3:(R2O+RO) greater than or equal to 0.9, where R2O is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.

Abstract: Glasses that undergo rapid ion exchange. The glasses comprise SiO2, Al2O3, P2O5, Na2O, K2O, and, in some embodiments, at least one of MgO and ZnO. The glass may, for example, be ion exchanged in a molten KNO3 salt bath in less than 1 hour at temperatures in a range from about 370° C. to about 390° C. to achieve a depth of surface compressive layer of greater than about 45 microns, or in a range from about 0.05t to about 0.22t, where t is the thickness of the glass. The glasses are fusion formable and, in some embodiments, compatible with zircon.

Abstract: Glasses that can be chemically strengthened and are colored by transition metals. Most of the glasses are black, with some having high damage resistance and compressive surface layers having high compressive stress and depth of layer after ion exchange. These colored glasses do not require a post-forming heat treatment to produce color and are formable by fusions drawing, rolling, slot drawing, and float glass processes.

Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Abstract: A glass composition includes greater than or equal to 50 mol % and less than or equal to 70 mol % SiO2; greater than or equal to 10 mol % and less than or equal to 20 mol % Al2O3; greater than or equal to 1 mol % and less than or equal to 10 mol % B2O3; greater than or equal to 7 mol % and less than or equal to 14 mol % Li2O; greater than 0 mol % and less than or equal to 8 mol % Na2O; greater than 0 mol % and less than or equal to 1 mol % K2O; greater than or equal to 0 mol % and less than or equal to 7 mol % CaO; greater than or equal to 0 mol % and less than or equal to 8 mol % MgO; and greater than or equal to 0 mol % and less than or equal to 8 mol % ZnO. R2O+R?O is less than or equal to 25 mol %, wherein R2O is the sum of Li2O, Na2O, and K2O and R?O is the sum of CaO, MgO, and ZnO. The glass composition includes at least one of NiO+Co3O4+Cr2O3+CuO is greater than or equal to 0.001 mol %, CeO2 is greater than or equal to 0.1 mol %, and TiO2 is greater than or equal to 0.1 mol %.

Abstract: A glass composition comprises: 50.0 mol % to 70.0 mol % SiO2; 10.0 mol % to 25.0 mol % Al2O3; 0.0 mol % to 5.0 mol % P2O3; 0.0 mol % to 10.0 mol % B2O3; 5.0 mol % to 15.0 mol % Li2O; 1.0 mol % to 15.0 mol % Na2O; and 0.0 mol % to 1.0 mol % K2O. The sum of all alkali oxides, R2O, 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 Al2O3 and R2O 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?(Al2O3—(R2O+RO))/Li2O?0.3.

Abstract: A glass composition includes: greater than or equal to 24 mol % and less than or equal to 60 mol % SiO2; greater than or equal to 23 mol % and less than or equal to 35 mol % Al2O3; greater than or equal to 3.5 mol % and less than or equal to 35 mol % B2O3; greater than 0 mol % and less than or equal to 20 mol % Li2O; greater than or equal to 0 mol % and less than or equal to 10 mol % Na2O; and greater than or equal to 0 mol % and less than or equal to 3 mol % K2O. The sum of Li2O, Na2O, and K2O (i.e., R2O) in the glass composition may be greater than or equal to 12 mol % and less than or equal to 20 mol %.

Abstract: A glass composition includes: Si2O, greater than 0 mol % to less than or equal to 24 mol % Al2O3, B2O3, K2O, greater than or equal to 10 mol % to less than or equal to 38 mol % MgO, Na2O, and Li2O. The glass composition may have a fracture toughness of greater than or equal 0.80 MPa?m and a Young's modulus of greater than or equal to 80 GPa to less than or equal to 120 GPa. The glass composition is chemically strengthenable. The glass composition may be used in a glass article or a consumer electronic product.

Abstract: A colored glass article includes greater than or equal to 50 mol % and less than or equal to 80 mol % SiO2; greater than or equal to 7 mol % and less than or equal to 25 mol % Al2O3; greater than or equal to 1 mol % and less than or equal to 15 mol % B2O3; greater than or equal to 5 mol % and less than or equal to 20 mol % Li2O; greater than or equal to 0.5 mol % and less than or equal to 15 mol % Na2O; greater than 0 mol % and less than or equal to 1 mol % K2O; and greater than or equal to 1×10?6 mol % and less than or equal to 1 mol % Au. R2O—Al2O3 is greater than or equal to ?5 mol % and less than or equal to 7 mol %, R2O being the sum of Li2O, Na2O, and K2O.

Abstract: A glass composition includes greater than or equal to 60 mol % to less than or equal to 66 mol % SiO2, greater than or equal to 14 mol % to less than or equal to 16 mol % Al2O3, greater than or equal to 7 mol % to less than or equal to 9 mol % Li2O, greater than or equal to 4 mol % to less than or equal to 6 mol % Na2O, greater than or equal to 0.5 mol % to less than or equal to 3 mol % P2O5, greater than or equal to 0.5 mol % to less than or equal to 6 mol % B2O3; and greater than 0 mol % to less than or equal to 1 mol % TiO2. The glass composition may have a fracture toughness of greater than or equal 0.75 MPa?m. A glass composition includes SiO2, Al2O3, Li2O, Na2O, P2O5, and B2O3, wherein a molar ratio of Li2O/Na2O is greater than or equal to 1.2 to less than or equal to 2.0, the glass has a liquidus viscosity in the range from greater than or equal to 50 kP to less than or equal to 75 kP, and the glass has a KIC fracture toughness greater than or equal to 0.75 MPa·m0.5.

Abstract: Methods of manufacturing a glass-based article includes exposing a glass-based substrate having a lithium aluminosilicate composition to an ion exchange treatment to form the glass-based article. The ion exchange treatment including a molten salt bath having a concentration of a sodium salt in a range from 8 mol % to 100 mol %. The glass-based article includes sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article The glass-based article has compressive stress layer extending from the surface to a spike depth of layer from 4 micrometers to 8 micrometers. The glass-based article includes a molar ratio of potassium oxide (K2O) to sodium oxide (Na2O) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8.