Glass composition and glass substrate
    1.
    发明授权
    Glass composition and glass substrate 失效
    玻璃组合物和玻璃基材

    公开(公告)号:US07396788B2

    公开(公告)日:2008-07-08

    申请号:US10460908

    申请日:2003-06-13

    IPC分类号: C03C3/091 C03C3/093

    CPC分类号: G11B5/7315 C03C3/083

    摘要: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 15% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 65 to 90% by weight; a total of 7 to 20% by weight of R2O compounds, where R=Li, Na, and K; and a total of 0 to 12% by weight, zero inclusive, of R′O compounds, where R′=Mg, Ca, Sr, Ba, and Zn. Moreover, the following conditions are fulfilled: B2O3=0% by weight, or Al2O3/B2O3≧1.0; and (SiO2+Al2O3+B2O3)/(the total of R2O compounds+the total of R2O compounds)≧3.

    摘要翻译: 用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至15重量%,包括0的B 2 O 3 3; SiO 2 + 2→2→3→3→3→3→3 占65 至90重量% 总共7至20重量%的R 2 O 2化合物,其中R = Li,Na和K; 和0〜12重量%,包括0的R'O化合物,其中R'= Mg,Ca,Sr,Ba和Zn。 此外,满足以下条件:B 2 O 3 3 = 0重量%,或Al 2 O 3 3 / B 3 = 1.0; 和(SiO 2/2 + Al 2 O 3 + B 2 O 3 3) /(R 2 O 2化合物的总和+ R 2 O O化合物的总和)= 3。

    Glass composition and glass substrate
    2.
    发明授权
    Glass composition and glass substrate 有权
    玻璃组合物和玻璃基材

    公开(公告)号:US07192898B2

    公开(公告)日:2007-03-20

    申请号:US10633893

    申请日:2003-08-04

    IPC分类号: C03C3/091 C03C3/093 G11B7/253

    CPC分类号: C03C3/083 C03C3/091

    摘要: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 8% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 0 to 20% by weight, zero inclusive, of R2O compounds, where R=Li, Na, and K; and a total of 0 to 15% by weight, zero inclusive, of TiO2+ZrO2+LnxOy, where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5.

    摘要翻译: 用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至8重量%,包括0的B 2 O 3 O 3; SiO 2 + 2 2 O 3 + B 2 O 3 3 占60 至90重量% 总共0至20重量%,包括0的R 2 O 2化合物,其中R = Li,Na和K; 并且总共0至15重量%,包括0的TiO 2 + ZrO 2 + Ln x O O y, 其中Ln x O O y表示至少一种选自镧系元素金属氧化物,Y 2 O 2 O 3的化合物 > 3,Nb 2 O 5,和Ta 2 O 5。