不良・失敗
solarization
Japanese: ソラリゼーション
A phenomenon in which glass containing manganese turns purple due to ultraviolet light or prolonged exposure to high temperatures and oxidation. / Note: This is the same phenomenon that causes old glass windows to take on a purple tint.
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Solarization is a phenomenon in which glass containing manganese turns purple due to ultraviolet light or prolonged exposure to high temperatures. It occurs when Mn²⁺ in the glass is oxidized to Mn³⁺.
This is the same mechanism that causes old glass windows to take on a purple tint over time. With manganese-containing glass, it is necessary to carefully control the duration of high-temperature holding.
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.