Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same
    1.
    发明授权
    Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same 有权
    玻璃组合物,玻璃制品,磁记录介质用玻璃基板及其制造方法

    公开(公告)号:US07767607B2

    公开(公告)日:2010-08-03

    申请号:US11933581

    申请日:2007-11-01

    IPC分类号: C03C3/087 G11B5/706

    摘要: A glass substrate of the present invention for magnetic recording media having high heat resistance and easy chemical strengthening ability at once has not been obtained, which is a glass composition essentially comprising 60 to 70 wt % SiO2, 5 to 20 wt % Al2O3, 0 to 1 wt % Li2O, 3 to 18 wt % Na2O, 0 to 9 wt % K2O, 0 to 10 wt % MgO, 1 to 15 wt % CaO, 0 to 4.5 wt % SrO, 0 to 1 wt % BaO, 0 to 1 wt % TiO2 and 0 to 1 wt % ZrO2, wherein the sum of Li2O, Na2O and K2O is from 5 to 25 wt %, and the sum of MgO, CaO, SrO and BaO is from 5 to 20 wt %.

    摘要翻译: 本发明的用于具有高耐热性和易于化学强化能力的磁记录介质的本发明的玻璃基板尚未得到,其为基本上包含60至70重量%的SiO 2,5至20重量%的Al 2 O 3,0至 1重量%Li 2 O,3〜18重量%Na 2 O,0〜9重量%K 2 O,0〜10重量%MgO,1〜15重量%CaO,0〜4.5重量%SrO,0〜1重量%BaO,0〜1 重量%TiO 2和0〜1重量%的ZrO 2,其中Li 2 O,Na 2 O和K 2 O的总和为5〜25重量%,MgO,CaO,SrO和BaO的总和为5〜20重量%。

    Glass composition and process for producing the same
    3.
    发明授权
    Glass composition and process for producing the same 有权
    玻璃组合物及其制造方法

    公开(公告)号:US06376403B1

    公开(公告)日:2002-04-23

    申请号:US09933016

    申请日:2001-08-21

    IPC分类号: C03C3085

    摘要: A glass composition is disclosed which has a high modulus of elasticity (Young's modulus) and a high rigidity (modulus of elasticity/specific gravity) and is capable of being effectively inhibited from bending or vibrating. Also disclosed is process for producing the glass composition. The glass composition comprises, in terms of mol %, 40 to 65% SiO2, 5 to 25% Al2O3, 2 to 20% Li2O, 0 to 9% Na2O, 0 to 10% TiO2, 0 to 10% ZrO2, 0 to 25% MgO, 0 to 25% CaO, and 0 to 10% SrO, provided that the content of RO (RO=MgO+CaO+SrO) is from 2 to 40% and the sum of (Li2O)/2 and Na2O is from 1 to 10 mol %, said glass composition further containing, as clarifiers, from 0.01 to 5 mol % SnO2 and up to 0.1 mol % sulfur (S) in terms of the amount of SO3.

    摘要翻译: 公开了具有高弹性模量(杨氏模量)和高刚性(弹性模量/比重)的玻璃组合物,并且能够被有效地抑制弯曲或振动。 还公开了制造玻璃组合物的方法。 该玻璃组合物以摩尔%计含有40至65%的SiO 2,5至25%的Al 2 O 3,2至20%的Li 2 O,0至9%的Na 2 O,0至10的TiO 2,0至10的ZrO 2,0至25 (MgO),0〜25%的CaO和0〜10%的SrO,条件是RO(RO = MgO + CaO + SrO)的含量为2〜40%,(Li 2 O)/ 2和Na 2 O的总和来自 1〜10摩尔%,所述玻璃组合物还含有以SO 3量计的0.01〜5摩尔%的SnO 2和0.1摩尔%的硫(S)作为澄清剂。

    Glass composition and substrate for information recording media comprising the same
    4.
    发明授权
    Glass composition and substrate for information recording media comprising the same 有权
    用于包含该玻璃组合物的信息记录介质的玻璃组合物和基底

    公开(公告)号:US06365534B1

    公开(公告)日:2002-04-02

    申请号:US09661427

    申请日:2000-09-13

    IPC分类号: C03C3087

    摘要: A glass composition is disclosed which has a high modulus of elasticity (Young's modulus) and a high rigidity (modulus of elasticity/specific gravity) and is capable of being effectively inhibited from bending or vibrating. Also disclosed is a substrate for information recording media, which comprises the glass composition. The glass composition comprises the following components in terms of mol %: 50 to 64% SiO2, 6 to 18% Al2O3, 7 to 15% Li2O, 3 to 12% Na2O, 0 to 2% K2O, 0 to 10% TiO2, 0 to 4% ZrO2, 0 to 6% MgO, 0 to 9% CaO, and 0 to 6% SrO, provided that the content of RO (RO=MgO+CaO+SrO) is from 2 to 15%.

    摘要翻译: 公开了具有高弹性模量(杨氏模量)和高刚性(弹性模量/比重)的玻璃组合物,并且能够被有效地抑制弯曲或振动。 还公开了一种包括玻璃组合物的信息记录介质用基板。 该玻璃组合物包含以摩尔%计的以下组分:50至64%SiO 2,6至18%Al 2 O 3,7至15%Li 2 O,3至12%Na 2 O,0至2%K 2 O,0至10%TiO 2,0 至4%的ZrO 2,0〜6%的MgO,0〜9%的CaO和0〜6%的SrO,条件是RO(RO = MgO + CaO + SrO)的含量为2〜15%。

    GLASS COMPOSITION, GLASS ARTICLE, GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIA, AND METHOD FOR PRODUCING THE SAME
    5.
    发明申请
    GLASS COMPOSITION, GLASS ARTICLE, GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIA, AND METHOD FOR PRODUCING THE SAME 有权
    玻璃组合物,玻璃制品,用于磁记录介质的玻璃基材及其制造方法

    公开(公告)号:US20080053152A1

    公开(公告)日:2008-03-06

    申请号:US11933581

    申请日:2007-11-01

    IPC分类号: C03C3/083 C03C21/00

    摘要: A glass substrate of the present invention for magnetic recording media having high heat resistance and easy chemical strengthening ability at once has not been obtained, which is a glass composition essentially comprising 60 to 70 wt % SiO2, 5 to 20 wt % Al2O3, 0 to 1 wt % Li2O, 3 to 18 wt % Na2O, 0 to 9 wt % K2O, 0 to 10 wt % MgO, 1 to 15 wt % CaO, 0 to 4.5 wt % SrO, 0 to 1 wt % BaO, 0 to 1 wt % TiO2 and 0 to 1 wt % ZrO2, wherein the sum of Li2O, Na2O and K2O is from 5 to 25 wt %, and the sum of MgO, CaO, SrO and BaO is from 5 to 20 wt %.

    摘要翻译: 本发明的用于磁记录介质的具有高耐热性并且容易化学强化能力的本发明的玻璃基板尚未得到,它是基本上包含60至70重量%的SiO 2,5 至20重量%的Al 2 O 3 3,0至1重量%的Li 2 O 3,3至18重量%的Na 2, ,0〜9重量%的K 2 O,0〜10重量%的MgO,1〜15重量%的CaO,0〜4.5重量%的SrO,0〜1重量%的BaO,0 至1重量%的TiO 2和0至1重量%的ZrO 2,其中Li 2 O 2,Na 2, O 2和K 2 O 5为5〜25重量%,MgO,CaO,SrO和BaO的总和为5〜20重量%。

    Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same
    6.
    发明授权
    Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same 有权
    玻璃组合物,玻璃制品,磁记录介质用玻璃基板及其制造方法

    公开(公告)号:US07309671B2

    公开(公告)日:2007-12-18

    申请号:US10442933

    申请日:2003-05-22

    IPC分类号: C03C3/087 G11B5/706

    摘要: A glass substrate of the present invention for magnetic recording media having high heat resistance and easy chemical strengthening ability at once has not been obtained, which is a glass composition essentially comprising 60 to 70 wt % SiO2, 5 to 20 wt % Al2O3, 0 to 1 wt % Li2O, 3 to 18 wt % Na2O, 0 to 9 wt % K2O, 0 to 10 wt % MgO, 1 to 15 wt % CaO, 0 to 4.5 wt % SrO, 0 to 1 wt % BaO, 0 to 1 wt % TiO2 and 0 to 1 wt % ZrO2, wherein the sum of Li2O, Na2O and K2O is from 5 to 25 wt %, and the sum of MgO, CaO, SrO and BaO is from 5 to 20 wt %.

    摘要翻译: 本发明的用于磁记录介质的具有高耐热性并且容易化学强化能力的本发明的玻璃基板尚未得到,它是基本上包含60至70重量%的SiO 2,5 至20重量%的Al 2 O 3 3,0至1重量%的Li 2 O 3,3至18重量%的Na 2, ,0〜9重量%的K 2 O,0〜10重量%的MgO,1〜15重量%的CaO,0〜4.5重量%的SrO,0〜1重量%的BaO,0 至1重量%的TiO 2和0至1重量%的ZrO 2,其中Li 2 O 2,Na 2, O 2和K 2 O 5为5〜25重量%,MgO,CaO,SrO和BaO的总和为5〜20重量%。

    Glass composition and substrate for information recording media comprising the same
    7.
    发明授权
    Glass composition and substrate for information recording media comprising the same 有权
    用于包含该玻璃组合物的信息记录介质的玻璃组合物和基底

    公开(公告)号:US06340647B1

    公开(公告)日:2002-01-22

    申请号:US09293992

    申请日:1999-04-19

    IPC分类号: C03C3062

    摘要: A glass composition is disclosed which has a high modulus of elasticity (Young's modulus) and a high rigidity (modulus of elasticity/specific gravity) and is capable of being effectively inhibited from bending or vibrating. Also disclosed is a substrate for information recording media, which comprises the glass composition. The glass composition comprises the following components in terms of mol %: 40 to 60% SiO2, 8 to 25% Al2O3, 2 to 20% Li2O, 0 to 5% Na2O; provided that the content of R2O (R2O=Li2O+Na2O) is from 2 to 20%, 0 to 10% TiO2, 0 to 10% ZrO2, 5 to 25% MgO, 0 to 25% CaO and 0 to 6% SrO, provided that the content of RO (RO=MgO+CaO+SrO) is from more than 15 to 40%.

    摘要翻译: 公开了具有高弹性模量(杨氏模量)和高刚性(弹性模量/比重)的玻璃组合物,并且能够被有效地抑制弯曲或振动。 还公开了一种包括玻璃组合物的信息记录介质用基板。 该玻璃组合物包含以摩尔%计的以下成分:40-60%SiO 2,8-25%Al 2 O 3,2至20%Li 2 O,0至5%Na 2 O; 条件是R2O(R2O = Li2O + Na2O)的含量为2〜20%,0〜10%TiO 2,0〜10%ZrO 2,5〜25%MgO,0〜25%CaO和0〜6%SrO, RO(RO = MgO + CaO + SrO)的含量为15〜40%左右。

    Glass composition and substrate for information recording media comprising the same
    10.
    发明授权
    Glass composition and substrate for information recording media comprising the same 有权
    用于包含该玻璃组合物的信息记录介质的玻璃组合物和基底

    公开(公告)号:US06333286B1

    公开(公告)日:2001-12-25

    申请号:US09377149

    申请日:1999-08-19

    IPC分类号: C03C3085

    摘要: A glass composition is disclosed which has a high modulus of elasticity (Young's modulus) and a high rigidity (modulus of elasticity/specific gravity) and is capable of being effectively inhibited from bending or vibrating. Also disclosed is a substrate for information recording media which comprises the glass composition. The glass composition comprises the following components, in terms of mol %: 55 to 65% SiO2, 0.5 to less than 6% Al2O3, 12 to 22% Li2O, 0 to 5% Na2O, 0 to 10% TiO2, 0 to 3% ZrO2, 0 to 8% MgO, 0 to 18% CaO, and 0 to 6% SrO, provided that the content of RO (RO=MgO+CaO+SrO) is 5 to 18%.

    摘要翻译: 公开了具有高弹性模量(杨氏模量)和高刚性(弹性模量/比重)的玻璃组合物,并且能够被有效地抑制弯曲或振动。 还公开了一种包含玻璃组合物的信息记录介质用基板。 该玻璃组合物包含以摩尔%计的以下组分:55至65%的SiO 2,0.5至小于6的Al 2 O 3,12至22的Li 2 O,0至5的Na 2 O,0至10的TiO 2,0至3重量% ZrO 2,0〜8%MgO,0〜18%CaO和0〜6%SrO,条件是RO(RO = MgO + CaO + SrO)的含量为5〜18%。