鋳込み成形・焼結によって製作された不透明シリカガラス(第1報) : 鋳込み成形と焼結

概要

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Large bodies of opaque silica glass were fabricated by slip casting and sintering. The raw material was highly pure synthetic silica powders. The slip was prepared without adding any binder. Three types of powders with different particle sizes were used to examine the influence of particle size on slip casting. A significant influence was found, and large green compacts could be obtained only by using a powder with an average particle size of 5 μm. Three types of mold materials, plaster, plastic resin and mixtures of both, were tested. The plaster mold fabricated slip casting operation, but caused Ca contamination (about 3 ppm) into the resultant glass. After slip casting, the compacts were sintered at 1800℃ in nitrogen atmosphere. According to this process, a large ring (φ400mm) of opaque silica glass could be fabricated without any appreciable distortion.
社団法人日本セラミックス協会の論文
2000-03-01