REDUCED STRIAE LOW EXPANSION GLASS AND ELEMENTS, AND A METHOD FOR MAKING SAME
    3.
    发明申请
    REDUCED STRIAE LOW EXPANSION GLASS AND ELEMENTS, AND A METHOD FOR MAKING SAME 审中-公开
    减少的低膨胀玻璃和元素,以及制造它们的方法

    公开(公告)号:US20100154474A1

    公开(公告)日:2010-06-24

    申请号:US12688218

    申请日:2010-01-15

    IPC分类号: C03B19/06 C03B19/00

    摘要: The invention is directed to a method for reducing striae in ultra-low expansion glass, for example, silica-titania glass, by heat-treating the glass at temperatures above 1600° C. for a time in the range of 72-288 hours. The silica-titania glass is formed by substantially simultaneously forming, collecting and consolidating a silica-titania soot formed in one or a plurality of burners using silicon-containing feedstock and a titanium-containing feedstock. In one embodiment of the invention the glass is heat treated without forcing the glass to flow or “move”. The invention was found to reduce the magnitude of striae in an ultra-low expansion glass by at least 50%, and particularly reduces most of the “higher frequency” striae.

    摘要翻译: 本发明涉及通过在高于1600℃的温度下将玻璃热处理72-88小时的时间,来减少超低膨胀玻璃(例如二氧化硅 - 二氧化钛玻璃)中的条纹的方法。 二氧化硅 - 二氧化钛玻璃通过使用含硅原料和含钛原料基本上同时形成,收集和固结形成在一个或多个燃烧器中的二氧化硅 - 二氧化钛烟炱而形成。 在本发明的一个实施例中,玻璃被热处理而不强迫玻璃流动或“移动”。 发现本发明能够将超低膨胀玻璃中的条纹幅度减小至少50%,特别是减少大部分“较高频率”的条纹。