HIGH INDEX GLASSES
    53.
    发明申请
    HIGH INDEX GLASSES 审中-公开

    公开(公告)号:US20200172426A1

    公开(公告)日:2020-06-04

    申请号:US16682482

    申请日:2019-11-13

    Abstract: A glass composition comprising: Al2O3, ZnO, and SiO2; TiO2, in the amount of at least 10 mol % and not greater than 20 mol %; and alkaline metal oxide selected from the group consisting of MgO, CaO, SrO, BaO, or any combination thereof, such that the molar sum of MgO, CaO, SrO, BaO, and ZnO, in the amount in the glass composition is least 20 mol % and not greater than 35 mol %, and such that: the amount of BaO is 0 to 10 mol %; the amount of MgO is 0 to 10 mol % the amount of CaO is 0 to 10 mol %, and the molar sum of CaO and MgO in the glass composition is less than 12.5 mol %; and rare earth metal oxides (ΣREmOn), in the amount of at least 1.5 mol % and not greater than 10 mol %; alkali metal oxides (ΣAlk2O), in the amount of greater than or equal to 0 mol % and less than or equal to 5 mol %; and not greater than 5 mol % of other components; and wherein −5 mol %≤Al2O3 (mol %)−1.5 ΣREmOn (mol %)−ΣAlk2O (mol %)≤+5 mol %.

    Transparent silicate glasses with high fracture toughness

    公开(公告)号:US10427972B2

    公开(公告)日:2019-10-01

    申请号:US15650152

    申请日:2017-07-14

    Abstract: Provided herein are glass based articles comprising SiO2, Al2O3, and two or more metal oxides selected from the group consisting of La2O3, BaO, Ta2O5, Y2O3, and HfO2. The glass based articles typically are characterized by a high fracture toughness (e.g., at least 0.86 MPa*m0.5), a high Young's modulus value (e.g., at least 85 GPa) and/or a stress optical coefficient (SOC) of not more than 3 Brewster (e.g., about 1.3 Brewster to about 2 Brewster). Also provided herein are glass based articles comprising SiO2 and two or more of MxOy, wherein M is Ba, La, Ta, Y, Al or Hf; wherein the total amount of SiO2 is the same or substantially the same as that of a reference glass based article comprising two or more binary compositions of MxOy—SiO2, wherein the reference glass based article has the same molar percentage of each MxOy, and the molar ratio of MxOy to SiO2 in each binary composition is 4/(c*x), wherein c is the number of charges of M.

    ION EXCHANGEABLE GLASSES HAVING HIGH FRACTURE TOUGHNESS

    公开(公告)号:US20240132394A1

    公开(公告)日:2024-04-25

    申请号:US18530847

    申请日:2023-12-06

    CPC classification number: C03C3/097 C03C21/002 H05K5/03

    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. The glass composition is chemically strengthenable. The glass composition may be used in a glass-based article or a consumer electronic product.

    MAGNESIUM ALUMINOSILICATE GLASSES WITH HIGH FRACTURE TOUGHNESS

    公开(公告)号:US20240043315A1

    公开(公告)日:2024-02-08

    申请号:US18380764

    申请日:2023-10-17

    CPC classification number: C03C3/087 C03C21/002

    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.

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