Glass compositions having high thermal and chemical stability

Glass compositions having high thermal and chemical stability

  • CN 103,347,830 A
  • Filed: 01/25/2012
  • Published: 10/09/2013
  • Est. Priority Date: 01/25/2011
  • Status: Active Application
First Claim
Patent Images

1. glass, in oxide compound, it comprises the component of following molar percentage:

  • 70≤

    SiO 2

    74.5 10.5≤

    Al 2O 3

    13.5 0≤

    B 2O 3

    2.5 3≤

    MgO≤

    73≤

    CaO≤

    70≤

    SrO≤

    41.5≤

    BaO≤

    60≤

    SnO 2

    0.3 0≤

    CeO 2

    0.3 0≤

    As 2O 3

    0.5 0≤

    Sb 2O 3

    0.5 0.01≤

    Fe 2O 3

    0.08 F+Cl+Br≤

    0.4In the formula;

    a)1.05≤

    (MgO+CaO+SrO)/Al 2O 3

    1.7 b)0.2≤

    MgO/(CaO+SrO+BaO)≤

    0.45Al wherein 2O 3, MgO, CaO, SrO and BaO represent the molar percentage of representative oxide component.

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