摘要 |
Glass-ceramic consisting of: SiO<SUB>2</SUB>: -30-70 wt %; A1<SUB>2</SUB>O<SUB>3</SUB>: 8-45 wt %; M<SUB>2</SUB>O:8-30 wt %; MO: 0-30 wt %; B<SUB>2</SUB>O<SUB>3</SUB>: 0-15 wt %; P<SUB>2</SUB>O<SUB>5</SUB>: 0-15 wt %; Zr<SUB>2</SUB>O: 0-12 wt %; TiO<SUB>2</SUB>: 0-12 wt %, wherein M is chosen in the group consisting of: Li, NA, K or mixture thereof; M' is chosen in the group consisting of: Be, Mg, Ca, Ba, Sr, Zn, Pb or mixture thereof are described. |