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Title
Wiederverwendbarer Tiegel aus einer Siliziumnitrid-Keramik sowie dessen Verwendung bei der Herstellung eines mono- oder multikristallinen Halbmetallkörpers aus einer Schmelze
Date Issued
2012
Author(s)
Patent No
102012101214
Abstract
The re-usable silicon nitride ceramic crucible comprises an oxygen-enriched surface layer, which is formed by thermally oxidaizing the silicon nitride ceramic under an air atmosphere or an inert gas atmosphere at a temperature of 1050-1200[deg] C for 0.5-12 hours. An independent claim is included for a method for the preparation of a monocrystalline semi-metal body from a melt.
Language
de
Patenprio
DE 102012101214 A1: 20120215