α, β-Al_2O_3セラミックスとBa-Sr-アルカリ-シリケートガラスの反応
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概要
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Reaction between α, β-Al_2O_3 ceramics(produced by fusion cast method)and Ba-Sr-alkali-silicate glass was studied on samples from glass melting tank. This tank had been used for about 6.5 years. Dendritic leucite(KAlSi_2O_6)crystals were observed at the interface between ceramics and glass. These crystals were about 120 μm long at the position of the glass meniscus line. Leucite was crystallized in Al_2O_3-rich liquid due to the corrosion of α, β-Al_2O_3 ceramics. β-Al_2O_3 crystals in the ceramics showed no morphological change but chemical substitution of K, Ba and Sr for Na occurred. Leucite and β-Al_2O_3-like crystals are occasionally found as a defect in glass production. It is clear that these crystals are formed at the interface between α, β-Al_2O_3 ceramics and molten glass.
- 社団法人日本セラミックス協会の論文
- 1999-03-01
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