| 摘要 |
Provided are a vitreous silica crucible which enables, during pulling, crystallization promotion of the inner surface and retention of the crucible strength, and a method of manufacturing the same. The vitreous silica crucible 10 has, in at least a portion of a straight body section 10, a region between 0.3 mm and 3 mm from the crucible inner surface has an OH group concentration and an OH group concentration gradient which increase as a distance from the inner surface decreases, and decrease as a distance from the inner surface increases. The vitreous silica crucible can be manufactured by a process comprising the step of heating and melting silica powder deposited on an inner surface of a rotating mold to vitrify the silica powder, wherein vapor-containing air is introduced during or right after the melting, or the crucible is reheated, after the melting and cooling, under a vapor-containing environment. |
