Synthetic silica glass and its manufacturing method
    176.
    发明授权
    Synthetic silica glass and its manufacturing method 有权
    合成石英玻璃及其制造方法

    公开(公告)号:US06442973B1

    公开(公告)日:2002-09-03

    申请号:US09235409

    申请日:1999-01-22

    Abstract: A method is provided for manufacturing a synthetic silica glass. The method includes the steps of maintaining a silica glass member, which is formed using a flame hydrolysis method and having an OH group concentration of about 500 ppm to about 1300 ppm, at a predetermined holding temperature for a predetermined period of time so as to substantially relax the structure of the silica glass member. The method further includes the step of subsequently cooling the silica glass member to a first predetermined temperature at a cooling rate of about 10 K/hour or less, and thereafter, cooling the silica glass member to a second predetermined temperature at a cooling rate of about 1 K/hour or less. The method further includes the step of further cooling the silica glass member to a third predetermined temperature at a cooling rate of about 10 K/hour or less.

    Abstract translation: 提供了一种制造合成石英玻璃的方法。 该方法包括以下步骤:在预定的保持温度下,使用火焰水解法形成并具有约500ppm至约1300ppm的OH基浓度的二氧化硅玻璃构件, 放松石英玻璃构件的结构。 该方法还包括以约10K /小时以下的冷却速度随后将石英玻璃构件冷却至第一预定温度的步骤,然后以大约的冷却速度将石英玻璃构件冷却至第二预定温度 1 K /小时以下。 该方法还包括以约10K /小时或更低的冷却速度将石英玻璃构件进一步冷却至第三预定温度的步骤。

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