METHOD FOR EVALUATING SUITABILITY OF SILICA POWDER FOR MANUFACTURING OF SILICA-GLASS CRUCIBLE FOR PULLING SILICON SINGLE CRYSTAL

摘要

A step of measuring the void ratio between the silica particles in the silica powder, a step of melting the silica powder, a step of measuring the bubble content of the silica glass block cured by cooling the fused silica powder, And a step of determining whether or not the silica powder is a suitable silica powder based on the void content of the silica glass block.;