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Title:
CARBON CRUCIBLE FOR PULLING SINGLE CRYSTAL
Document Type and Number:
Japanese Patent JP2000072588
Kind Code:
A
Abstract:

To provide a carbon crucible used for pulling single crystals and enabling stably repeated operations for pulling the single crystals such as single silicon crystals.

This carbon crucible for pulling a single crystal comprises a carbon fiber-reinforced carbon composite material (C/C material) in which a projected bottom member for fitting into the depressions of a crucible receiver is formed on the bottom portion of the crucible. Therein, at least the bottom member is formed from the C/C material having multi-dimensional woven structure comprising a three or more-dimensional woven structure, or carbon fiber tows are vertically woven in the bottom member to integrate the bottom member with the bottom surface portion.


Inventors:
Nakazawa, Masato
Application Number:
JP1998000243093
Publication Date:
March 07, 2000
Filing Date:
August 28, 1998
Export Citation:
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Assignee:
TOKAI CARBON CO LTD
International Classes:
C30B15/10; C30B29/06; D03D15/12; D03D25/00; (IPC1-7): C30B15/10; C30B29/06
Attorney, Agent or Firm:
福田 保夫 (外1名)