CARBON CRUCIBLE AND METHOD FOR PRODUCING SILICON SINGLE CRYSTAL BY USING CARBON CRUCIBLE

摘要

PROBLEM TO BE SOLVED: To provide a carbon crucible which is used for supporting and holding a quartz glass crucible for accommodating a molten material in a device for producing single crystals or poly-crystals such as a semiconductor material or a solar cell material, and which supports the quartz glass crucible to deter the deformation and easily detaches the quartz glass crucible after refrigeration.;SOLUTION: The carbon crucible 1 includes a counter part 2 for constituting a crucible bottom and a cylindrical body 3 superimposed on or inserted into the counter part 2. The counter part 2 comprises a graphite material. The cylindrical body 3 comprises a carbon fiber-reinforced-carbon-combined material formed by laminating a carbon fiber fabric cloth 4. A discontinuous part F is installed from a one end part to the other one end part of the cylindrical body 3. In the discontinuous part F, a carbon fiber-reinforced-combined material is present on at least one part of a direction vertical to the axis line of the cylindrical body 3.The carbon crucible has a structure of demonstrating binding force in the circumferential direction of the cylindrical body 3.;COPYRIGHT: (C)2012,JPO&INPIT