Quartz glass crucible and process for the manufacture of the crucible

• Main Authors: Fabian, Heinz, Arndt, Martin, Leist, Johann, Gertig, Udo, Englisch, Wolfgang
• Format: Patent
• Language: English
• Published: 15.04.2003

The present invention relates to a quartz glass crucible having a crucible body with an inner surface of quartz glass. Furthermore, the invention relates to a process for manufacturing a quartz glass crucible by providing a crucible body with an inner surface of quartz glass. To facilitate the start of a process using a quartz glass crucible with a crucible body and an inner layer of quartz glass a quartz glass crucible is provided with an inner surface roughened at least in the starting zone region by multiple depressions disposed at a maximum distance of 5 mm from one another. Furthermore, a simple and inexpensive process for the manufacture of such a quartz glass crucible is described, by providing a crucible body with a smooth inner surface of quartz glass and subsequently roughening the inner layer in the starting zone region by multiple depressions disposed at a maximum of 5 mm from one another.