| 摘要 |
The present invention relates to : - novel glass-ceramics of ß-quartz and/or of ß-spodumene ; - articles made from said novel glass-ceramics ; - lithium alumino-silicate glasses, which are precursors of said novel glass- ceramics ; - methods of preparing said novel glass-ceramics and articles made from said novel glass-ceramics. The present invention relates to the joint use of SnO2 and of Br, as an agent for fining the glass-ceramic glass precursor. |
