フロックキャスト成形体の大気雰囲気焼成による透明シリカガラス焼結体の作製

概要

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We prepared dense (67.9vol%) green bodies from high-purity spherical fused SiO_2 powder by using the floc-casting technique. A firing schedule was determined from data obtained by the in-situ measurement of the sintering shrinkage of the compacts. Accordingly, we fired the compacts at 1400℃ for 30min in air to obtain transparent SiO_2 glass sintered bodies. The XRD patterns of the sintered bodies were the same as those before sintering. No crystallization was observed in the sintered bodies. Moreover, the sintered bodies with a thickness of 2mm had a high transmissivity (>85%) in the visible range.
2007-06-01