Silica glass crucible, method for manufacturing same, and method for manufacturing silicon single crystal

A method for manufacturing a silica glass crucible, comprising:

• a step of preparing a crucible base material that is made of silica glass and has a crucible shape;
• a step of fabricating a synthetic silica glass material based on a direct method or a soot method;
• a step of processing the synthetic silica glass material into the crucible shape without being pulverized;
• and
• a step of bonding an inner wall of the crucible base material and an outer wall of the synthetic silica glass material processed into the crucible shape through a silica powder by performing a heat treatment.

A silica glass crucible comprising:

• a crucible base material that is made of silica glass and has a crucible shape;
• and
• a synthetic silica glass material processed into the crucible shape without being pulverized,
• wherein the synthetic silica glass material is fabricated by a direct method or a soot method and does not substantially contain air bubbles, and an inner wall of the crucible base material is bonded to an outer wall of the synthetic silica glass material through a silica powder.