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    • 2. 发明申请
    • GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME
    • 用于记录介质的玻璃基板及其制造方法
    • US20100215993A1
    • 2010-08-26
    • US12710629
    • 2010-02-23
    • Toshitaka YagiNaoyuki Goto
    • Toshitaka YagiNaoyuki Goto
    • C03C3/105C03C3/108G11B5/73C03B27/00
    • G11B5/8404C03C3/097C03C10/0027C03C21/002C03C2204/08G11B5/7315
    • There is provided a glass substrate which has the properties required in the use as a substrate for an information recording medium of the next generation such as a perpendicular magnetic recording system, and can be applied as a substrate for an information recording medium of the next generation particularly on the premise of using the glass substrate in a dynamic environment. More particularly, there is provided a glass substrate for an information recording medium which has sufficiently high surface hardness, has a good balance between specific gravity and mechanical strength, and has high strength to withstand high speed rotation or drop impact, and which can be produced with a high productivity adequate for a direct press method, without the occurrence of bubbles in the glass blank or reboil upon pressing even if arsenic components or antimony components are not substantially used. A glass substrate for an information recording medium, includes, as expressed in terms of percent by mass on the oxide basis: 52 to 67% of SiO2, 3 to 15% of Al2O3, and 0.2 to 8% of P2O5, the glass substrate having a Young's modulus of 85 GPa or greater, a specific gravity of 2.60 or less, and a ratio of Young's modulus to specific gravity (Young's modulus/specific gravity) of 33.0 or greater.
    • 提供了具有在用作诸如垂直磁记录系统的下一代信息记录介质的基板所需的性能的玻璃基板,并且可以用作下一代信息记录介质的基板 特别是在动态环境中使用玻璃基板的前提下。 更具体地,提供了一种用于信息记录介质的玻璃基板,其具有足够高的表面硬度,比重和机械强度之间具有良好的平衡,并且具有高的耐受高速旋转或落下冲击的强度,并且可以制造 具有足够的直接压制方法的高生产率,即使在基本不使用砷成分或锑成分的情况下,也不会在玻璃坯料中发生气泡或者在压制时再沸腾。 用于信息记录介质的玻璃基板包括以氧化物为基准的质量百分比表示:SiO 2为52〜67%,Al 2 O 3为3〜15%,P 2 O 5为0.2〜8%,玻璃基板 杨氏模量为85GPa以上,比重为2.60以下,杨氏模量与比重(杨氏模量/比重)的比为33.0以上。
    • 3. 发明申请
    • Hydrolysis-resistant glass, a method of making said glass and uses of same
    • 耐水解玻璃,制造所述玻璃的方法及其用途
    • US20060264313A1
    • 2006-11-23
    • US11437520
    • 2006-05-19
    • Joerg FechnerFranz Ott
    • Joerg FechnerFranz Ott
    • C03C3/105C03C3/095
    • C03C8/24C03C3/091C03C4/20
    • The glass for a fluorescent light with a high hydrolytic resistance, which has composition, in % by weight based on oxide content of: SiO2, 63-75; B2O3, 15-18; Al2O3, 2.5-4.5; Na2O, 0-10; K2O, 0-10; ΣNa2O+K2O, 2-10; MgO, 0-8; CaO, 0-10; SrO, 0-10; BaO, 0-10; ZnO, 0-5; ΣMgO+CaO+SrO+BaO+ZnO, 0-10; ZrO2, 0-3; CeO2, 0-10; Fe2O3, 0-1; WO3, 0-3; Bi2O3, 0-5; MoO3, 0-3; TiO2, 0-10; ΣHf+Ta+W+Re+Os+Ir+Pt+La+Pr+Nd+Sm+Eu+Gd+Tb+Dy+Ho+Er+Tm+Yb+Lu in oxidic form, 0 to 5% by weight, as well as one or more conventional refining agents. The glass is characterized in that it contains no lithium and has a weight ratio of Na2O to K2O of less than one.
    • 用于具有高耐水解性的荧光的玻璃,其具有以氧化物含量为基准的重量%的组成:SiO 2,63-75; B< 2< 3< 3>,15-18; Al 2 O 3,2.5-4.5; Na 2 O,0-10; K 2 O,0-10; SigmaNa 2 O + K 2 O,2-10; MgO,0-8; CaO,0-10; SrO,0-10; 宝,0-10; ZnO,0-5; SigmaMgO + CaO + SrO + BaO + ZnO,0-10; ZrO 2,0-3; CeO 2,0-10; Fe 2 O 3,0-1; WO 3,O 3; Bi 2 O 3,0-5; MoO 3,0-3; TiO 2,0-10; 0-5重量%的SigmaHf + Ta + W + Re + Os + Ir + Pt + La + Pr + Nd + Sm + Eu + Gd + Tb + Dy + Ho + Er + Tm + Yb + 以及一种或多种常规的澄清剂。 该玻璃的特征在于它不含锂,并且Na 2 O 2与K 2 O 2的重量比小于1。