GLASS WITH HIGH SURFACE STRENGTH
    22.
    发明申请

    公开(公告)号:US20210387898A1

    公开(公告)日:2021-12-16

    申请号:US17461071

    申请日:2021-08-30

    Abstract: Embodiments of alkali aluminosilicate glass articles that may be chemically strengthened to achieve a maximum surface compressive stress that exceeds compressive stresses that have been achieved in similar glasses are disclosed. In one or more embodiments, the fictive temperature of these glass articles may be equal to the 1011 poise (P) viscosity temperature of the glass article. In some embodiments, the strengthened alkali aluminosilicate glass articles described herein may exhibit a maximum compressive stress of at least about 400 MPa, 800 MPa, 930 MPa or 1050 MPa. In some embodiments, the strengthened alkali aluminosilicate glass articles described herein may exhibit a compressive stress layer extending to a depth of layer of at least about 40 μm (in samples having a thickness of 1 mm). In still other embodiments, these strengthened alkali aluminosilicate glass articles exhibit a parabolic or near-parabolic tensile stress profile in the central region of the glass articles.

    SOFT, CHEMICALLY-STRENGTHENABLE GLASSES FOR LAMINATES

    公开(公告)号:US20210323857A1

    公开(公告)日:2021-10-21

    申请号:US17271051

    申请日:2019-08-23

    Abstract: Disclosed herein are embodiments of a glass article having a glass composition. The glass composition includes SiO2 in an amount of from 63 mol % to 75 mol %, Al2O3 in an amount of from 7 mol % to 13 mol %, R2O in an amount of from 13 mol % to 24 mol %, P2O5 in an amount of from 0.1 mol % to 1.2 mol %, and a water content β-OH of 0.1 abs/mm to 0.5 abs/mm. Further, the glass composition includes at least one of MgO or ZnO. MgO is present in a range from 0 mol % to 7 mol %, and ZnO is present in a range from 0 mol % to 7 mol %. The glass article has an anneal point and a softening point, and the relationship of (anneal point+softening point)/2 is less than 685° C.

    GLASS COMPOSITIONS FOR USE IN CO-FORMED LAMINATES

    公开(公告)号:US20210179472A1

    公开(公告)日:2021-06-17

    申请号:US17270759

    申请日:2019-08-21

    Abstract: Embodiments of a method for pair bending glass articles is provided herein. In the method, a first glass article and a second glass article are stacked to form a stack. The first glass article includes a first surface, a second surface that opposes the first surface, and a first composition having first annealing and softening temperatures. The second glass article includes a third surface, a fourth surface that opposes the third surface, and a second composition having second annealing and softening temperatures. The annealing temperatures are within 35° C. of each other and are at least 550° C. The softening temperatures are within 35° C. of each other and are at least 750° C. In the method, the stack is placed on a mold, and the stack is heated to a sagging temperature such that a shaped stack is formed.

    Automotive glass compositions, articles and hybrid laminates

    公开(公告)号:US11028007B2

    公开(公告)日:2021-06-08

    申请号:US16002276

    申请日:2018-06-07

    Abstract: Embodiments of glass articles comprising an anneal point (° C.) and a softening point (° C.), and the relationship of (anneal point+softening point)/2 in a range from about 625° C. to about 725° C. are disclosed. In one or more embodiments, the glass articles include a glass composition including SiO2 in an amount in a range from about 63 mol % to about 75 mol %; Al2O3 in an amount in a range from about 7 mol % to about 13 mol %; R2O in an amount from about 13 mol % to about 24 mol %; P2O5 in an amount in a range from about 0 mol % to about 3 mol %, and one or both of MgO and ZnO. Laminates including such glass articles, and methods for making such laminates are also disclosed.

    Hybrid soda-lime silicate and aluminosilicate glass articles

    公开(公告)号:US10941071B2

    公开(公告)日:2021-03-09

    申请号:US14331753

    申请日:2014-07-15

    Abstract: A glass article is provided having from greater than or equal to about 40 mol % to less than or equal to about 68 mol % SiO2, less than or equal to about 11 mol % Al2O3, an R2O:R′O molar ratio of from greater than or equal to about 1:1 to less than or equal to about 2:1, and an MgO:CaO molar ratio of from greater than or equal to about 0.6:1 to less than or equal to about 1.8:1. The class article may also include a compressive stress layer on at least one surface thereof, the compressive stress layer having a compressive stress that is greater than or equal to about 800 MPa, and a depth that is greater than or equal to about 20 μm.

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