Search International and National Patent Collections

1. (WO2017036822) CRUCIBLE FOR PRODUCING SILICON INGOTS, METHOD FOR ITS PRODUCTION AND SILICON INGOT

Pub. No.:    WO/2017/036822    International Application No.:    PCT/EP2016/069719
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 20 01:59:59 CEST 2016
IPC: C30B 11/00
C30B 29/06
C30B 35/00
Applicants: ALZCHEM AG
Inventors: SCHNEIDER, Veronika
REIMANN, Christian
JOCHEN, Friedrich
SANS, Jürgen
KUCZYNSKI, Maciej
Title: CRUCIBLE FOR PRODUCING SILICON INGOTS, METHOD FOR ITS PRODUCTION AND SILICON INGOT
Abstract:
The invention relates to a crucible for producing silicon ingots, comprising a crucible bottom and crucible walls, the crucible bottom having at least in sections a silicon nitride-containing coating that has a root mean square value of at least 10 μm and a layer thickness of at least 30 μm. The invention also relates to a method for coating crucibles that are suitable for the production of silicon ingots, and to silicon ingots produced in this way.