Title:
CARBON CRUCIBLE
Document Type and Number:
WIPO Patent Application WO/2012/032948
Kind Code:
A1
Abstract:
Provided is a carbon crucible such that leakage of SiO gas from the boundary between a straight body part and a receiving part is prevented and early progression of SiC formation is prevented. That is, provided is a carbon crucible (5) for holding a quartz crucible (4) which is used in a single crystal puller for metals such as silicon, the carbon crucible (5) being divided into a straight body part (9) and a receiving part (10). A graphite sheet (11) is disposed between the quartz crucible (4) and the carbon crucible (5) such that the graphite sheet (11) covers at least the boundary (A) between the straight body part (9) and the receiving part (10) of the inner face of the carbon crucible (5). The graphite sheet (11) is an expanded graphite sheet.
Inventors:
OKADA OSAMU (JP)
HIROSE YOSHIAKI (JP)
YUKI TETSUYA (JP)
SUGAWA HIROMITSU (JP)
HIROSE YOSHIAKI (JP)
YUKI TETSUYA (JP)
SUGAWA HIROMITSU (JP)
Application Number:
PCT/JP2011/069304
Publication Date:
March 15, 2012
Filing Date:
August 26, 2011
Export Citation:
Assignee:
TOYO TANSO CO (JP)
OKADA OSAMU (JP)
HIROSE YOSHIAKI (JP)
YUKI TETSUYA (JP)
SUGAWA HIROMITSU (JP)
OKADA OSAMU (JP)
HIROSE YOSHIAKI (JP)
YUKI TETSUYA (JP)
SUGAWA HIROMITSU (JP)
International Classes:
C30B15/10; C04B35/83; C30B29/06
Domestic Patent References:
| WO2008126779A1 | 2008-10-23 |
Foreign References:
| JPH06345587A | 1994-12-20 | |||
| JP2009215162A | 2009-09-24 | |||
| JP2001261481A | 2001-09-26 | |||
| JPH10167879A | 1998-06-23 | |||
| JP2009280434A | 2009-12-03 |
Attorney, Agent or Firm:
KITADAI, Tetsuo et al. (JP)
Tetsuo Kitadai (JP)
Tetsuo Kitadai (JP)
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Claims:
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