METHOD FOR QUARTZ CRUCIBLE FABRICATION

摘要

A method for quartz crucible (20) formation wherein an at least substantially enclosed chamber (26, 34) surrounds a crucible mold (14). The atmosphere (38) in the chamber is controlled to include a desired gas or combination of gases at a positive pressure. The positive pressure is achieved because the total outflow of gas is less than the total inflow of gas. A heat source (22, 24) is initiated to melt a quartz material lining the mold once the desired atmosphere is achieved, and the quartz material is fused.