| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for transparent silica glass, by which high purity transparent silica glass with a small water-content is manufactured at a low temperature. SOLUTION: Ultrafine particles of fumed silica, the mean particle diameter of whose primary particles is about 10 nm, are oil-hydraulically pressed into a pressure-formed body. The pressure-formed body is heated and burned in an electric furnace under the condition of an atmospheric pressure. The heating temperature is 1,000-1,400°C; the heating time is 20-24 h at 1,000°C, 10-15 min at 1,200°C, and 5-10 min at 1,400°C. COPYRIGHT: (C)2004,JPO&NCIPI
|
