Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CRUCIBLE AND SINGLE CRYSTAL SAPPHIRE PRODUCTION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/137340
Kind Code:
A1
Abstract:
Provided are: a crucible that is capable of preventing leakage of a molten liquid; and a single crystal sapphire production method that uses the crucible. The crucible (1) comprises 40 mass% or more of molybdenum. The total content of C, N, and O is 100 ppm by mass or less. The hardness at an angle R section (16) at the boundary between a bottom surface (15) and a side surface (13) is 150-310 HV. The C content is 30 ppm by mass or less, the N content is 20 ppm by mass or less, and the O content is 50 ppm by mass or less.

Inventors:
TAKEUCHI YASUYUKI (JP)
FUKAYA YOSHITAKE (JP)
KATOH MASAHIRO (JP)
OKAMOTO KENICHI (JP)
Application Number:
PCT/JP2015/057016
Publication Date:
September 17, 2015
Filing Date:
March 10, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ALMT CORP (JP)
International Classes:
F27B14/10; B22F3/24; C22C27/04; C30B11/00; C30B29/20
Domestic Patent References:
WO2007049761A12007-05-03
Foreign References:
JP2013060348A2013-04-04
JP2012107782A2012-06-07
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Download PDF: