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不良・失敗
devitrite
Japanese: デビトライト
Crystals (needle-like and plate-like) of opacity that most typically form in soda-lime glass. / Note: Precipitates at 700–900°C.
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Devitrite (Na₂Ca₃Si₆O₁₆) is the most typical form of devitrification crystals found in soda-lime glass. It takes on needle-like or plate-like shapes and precipitates in the temperature range of 700–900°C.
It appears as cloudiness or wrinkles on the surface and grows the longer it remains in this temperature range.
This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.