LOW CRYSTALLINITY GLASS-CERAMICS
    22.
    发明申请
    LOW CRYSTALLINITY GLASS-CERAMICS 有权
    低结晶玻璃 - 陶瓷

    公开(公告)号:US20150239772A1

    公开(公告)日:2015-08-27

    申请号:US14623674

    申请日:2015-02-17

    Abstract: Embodiments of the present disclosure pertain to crystallizable glasses and glass-ceramics that exhibit a black color and are opaque. In one or more embodiments, the crystallizable glasses and glass-ceramics include a precursor glass composition that exhibits a liquidus viscosity of greater than about 20 kPa*s. The glass-ceramics exhibit less than about 20 wt % of one or more crystalline phases, which can include a plurality of crystallites in the Fe2O3—TiO2—MgO system and an area fraction of less than about 15%. Exemplary compositions used in the crystallizable glasses and glass-ceramics include, in mol %, SiO2 in the range from about 50 to about 76, Al2O3 in the range from about 4 to about 25, P2O5+B2O3 in the range from about 0 to about 14, R2O in the range from about 2 to about 20, one or more nucleating agents in the range from about 0 to about 5, and RO in the range from about 0 to about 20.

    Abstract translation: 本公开的实施方案涉及显示黑色并且是不透明的可结晶玻璃和玻璃陶瓷。 在一个或多个实施方案中,可结晶玻璃和玻璃陶瓷包括表现出大于约20kPa·s的液相线粘度的前体玻璃组合物。 该玻璃陶瓷表现出小于约20重量%的一个或多个结晶相,其可以包括Fe2O3-TiO2-MgO体系中的多个微晶,小于约15%的面积分数。 在可结晶玻璃和玻璃陶瓷中使用的示例性组合物包括摩尔%,约50至约76的SiO 2,约4至约25的氧化铝,约0至约25的范围内的P 2 O 5 + B 2 O 3 14,R 2 O在约2至约20的范围内,一种或多种成核剂在约0至约5范围内,RO在约0至约20的范围内。

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