发明授权
US06303527B1 Transparent glass-ceramics based on alpha- and beta-willemite 有权
透明玻璃陶瓷基于α-和β-硅青粉

  • 专利标题: Transparent glass-ceramics based on alpha- and beta-willemite
  • 专利标题(中): 透明玻璃陶瓷基于α-和β-硅青粉
  • 申请号: US09686419
    申请日: 2000-10-11
  • 公开(公告)号: US06303527B1
    公开(公告)日: 2001-10-16
  • 发明人: Linda R. Pinckney
  • 申请人: Linda R. Pinckney
  • 主分类号: C03C1004
  • IPC分类号: C03C1004
Transparent glass-ceramics based on alpha- and beta-willemite
摘要:
A glass-ceramic which is substantially and desirably totally transparent, and which contains a willemite predominant crystal phase within the ternary Mg2SiO4—Zn2SiO4—Li4SiO4 system. The glass-ceramic is formed from precursor glasses having the following compositions, in weight percent on an oxide basis, of 25-60 SiO2, 4-20 Al2O3, 20-55 ZnO, 0-12 MgO, 0-18 K2O, 0-12 Na2O, 0-30 GeO2, with the condition that &Sgr;K2O+Na2O≧5. The glass-ceramic may be doped with up to 1 wt. % Cr2O3 to impart optical activity thereto.
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