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发明授权
US07273668B2 Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet 有权
玻璃组合物，包括锆，化学强化玻璃制品，磁记录介质用玻璃基板和玻璃板的制造方法

  • 专利标题： Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet
  • 专利标题（中）： 玻璃组合物，包括锆，化学强化玻璃制品，磁记录介质用玻璃基板和玻璃板的制造方法
  • 申请号： US10860713
    申请日： 2004-06-03
  • 公开(公告)号： US07273668B2
    公开(公告)日： 2007-09-25
  • 发明人: Junji Kurachi , Akihiro Koyama
  • 申请人： Junji Kurachi , Akihiro Koyama
  • 申请人地址： JP Tokyo
  • 专利权人： Hoya Corporation
  • 当前专利权人： Hoya Corporation
  • 当前专利权人地址： JP Tokyo
  • 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
  • 优先权： JP2003-161661 20030606
  • 主分类号： G11B5/82
  • IPC分类号： G11B5/82 ;  C03C3/087
Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet
摘要：
The present invention provides a glass composition that has excellent heat resistance and ion exchange ability and can be provided with high strength by a chemical strengthening treatment through an ion exchange. This glass composition includes, in terms of mass %: 59 to 68% of SiO2; 9.5 to 15% of Al2O3; 0 to 1% of Li2O; 3 to 18% of Na2O; 0 to 3.5% of K2O; 0 to 15% of MgO; 1 to 15% of CaO; 0 to 4.5% of SrO; 0 to 1% of BaO; 0 to 2% of TiO2; and 1 to 10% of ZrO2. The glass composition of the present invention is suitable for a glass substrate for magnetic recording media and also can be formed as a chemically strengthened glass article through an ion-exchange treatment.
摘要（中）：

本发明提供了具有优异的耐热性和离子交换能力的玻璃组合物，并且可以通过离子交换通过化学强化处理而具有高强度。 该玻璃组合物以质量％计含有：59〜68％的SiO 2; 9.5至15％的Al 2 O 3 3; 0〜1％的Li 2 O; 3〜18％的Na 2 O; 0〜3.5％的K 2 O; 0〜15％的MgO; 1〜15％的CaO; 0〜4.5％的SrO; 0〜1％的BaO; 0〜2％的TiO 2; 和1至10％的ZrO 2 2。 本发明的玻璃组合物适用于磁记录介质用玻璃基板，也可以通过离子交换处理形成为化学强化玻璃制品。

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