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12 条记录 (耗时 0.023 秒)

    CoCrNiTa/Cr magnetic recording medium
    1.
    发明授权
    CoCrNiTa/Cr magnetic recording medium 失效
    CoCrNiTa / Cr磁记录介质

    公开(公告)号：US6033772A

    公开(公告)日：2000-03-07

    申请号：US964523

    申请日：1997-11-05

    申请人： Yu-Yun Lo ,  Tai-hwang Lai ,  James Liang ,  Hung-huei Liang

    发明人： Yu-Yun Lo ,  Tai-hwang Lai ,  James Liang ,  Hung-huei Liang

    IPC分类号： G11B5/64 ,  G11B5/66

    CPC分类号： G11B5/656 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/265

    摘要： A magnetic recording medium for use in making high-density computer hard disks. It contains: (a) an aluminum or Ni/P substrate; (b) a chromium underlayer on the substrate; (c) a four-component magnetic recording layer on the underlayer; and (d) a carbon protective layer on the magnetic recording layer. The magnetic recording layer comprises 66-78 atom percent of cobalt, 12-16 atom percent of chromium, 6-10 atom percent of nickel, and 4-8 atom percent of tantalum. The CoCrTiTa four-component exhibits a high coercivity (greater than 2,800 Oe), which results in many improved qualities, including increased recording density, reduced noise, improved off-track capability (OTC), and reduced on-track error rate (OTER). It also also allows the sputtering process to be conducted at a substantially lowered temperature.

    摘要翻译： 用于制造高密度计算机硬盘的磁记录介质。 它包含：（a）铝或Ni / P基材; （b）基底上的铬底层; （c）底层上的四组分磁记录层; 和（d）磁记录层上的碳保护层。 磁记录层包括66-78原子％的钴，12-16原子％的铬，6-10原子％的镍和4-8原子％的钽。 CoCrTiTa四组分显示出高矫顽力（大于2,800 Oe），这导致许多改进的质量，包括增加记录密度，降低的噪声，改进的离轨能力（OTC）和降低的轨道误差率（OTER） 。 它还允许溅射工艺在基本上降低的温度下进行。

    Magnetic recording media used in a high-density hard disk drive
    2.
    发明授权
    Magnetic recording media used in a high-density hard disk drive 失效
    用于高密度硬盘驱动器的磁记录介质

    公开(公告)号：US5981018A

    公开(公告)日：1999-11-09

    申请号：US78311

    申请日：1998-05-13

    申请人： Tai-Hwang Lai ,  Yu-Yun Lo ,  Chiun-Yen Tung ,  James Liang ,  Hung-Huei Liang

    发明人： Tai-Hwang Lai ,  Yu-Yun Lo ,  Chiun-Yen Tung ,  James Liang ,  Hung-Huei Liang

    IPC分类号： C23C14/16 ,  G11B5/73 ,  B32B3/02

    CPC分类号： G11B5/732 ,  C23C14/165 ,  G11B5/7325 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12632 ,  Y10T428/12819 ,  Y10T428/12854 ,  Y10T428/12931 ,  Y10T428/12944 ,  Y10T428/265

    摘要： The present invention relates to high-coercivity magnetic recording media used in a hard disk drive. The magnetic recording medium comprises a nonmagnetic substrate, a seed layer comprising NiAl alloy sputtered onto the substrate, a sublayer comprising CrV alloy sputtered onto the seed layer, a magnetic layer comprising CoCrPtTaNb alloy sputtered onto the sublayer, and a carbon overcoat sputtered onto the magnetic layer. The magnetic recording medium of such a structure has improved signal-to-noise ratio, coercivity, overwrite capability, and orientation ratio thereby greatly improving the storage density and read/write capacity of the magnetic recording medium. Furthermore, the coercivity of the magnetic layer of CoCrPtTaNb alloy according to the present invention can be as high as 4000 Oersteds even without the use of the NiAl seed layer.

    摘要翻译： 本发明涉及硬盘驱动器中使用的高矫顽力磁记录介质。 磁记录介质包括非磁性基底，溅射在基底上的包含NiAl合金的晶种层，溅射到种子层上的CrV合金的子层，溅射到子层上的CoCrPtTaNb合金的磁性层和溅射到磁层上的碳外涂层 层。 这种结构的磁记录介质具有提高的信噪比，矫顽力，重写能力和取向比，从而大大提高了磁记录介质的存储密度和读/写能力。 此外，即使不使用NiAl种子层，根据本发明的CoCrPtTaNb合金的磁性层的矫顽力也可以高达4000奥斯特。

    Method of sputtering an amorphous carbon overcoat as a protective film on magnetic recording disk
    3.
    发明授权
    Method of sputtering an amorphous carbon overcoat as a protective film on magnetic recording disk 失效
    将无定形碳外涂层作为保护膜溅射在磁记录盘上的方法

    公开(公告)号：US5873984A

    公开(公告)日：1999-02-23

    申请号：US964525

    申请日：1997-11-05

    申请人： Fu-Wen Cheng ,  James Liang ,  Tain-Wong Hung ,  Hung-huei Liang

    发明人： Fu-Wen Cheng ,  James Liang ,  Tain-Wong Hung ,  Hung-huei Liang

    IPC分类号： C23C14/06 ,  G11B5/72 ,  G11B5/84 ,  C23C14/35

    CPC分类号： G11B5/72 ,  C23C14/0605 ,  G11B5/8408

    摘要： A thin-film magnetic recording media is prepared which contains a carbon overcoat sputtered on a magnetic recording layer. The carbon overcoat is sputtered on the magnetic recording layer using a sputtering process which is conducted in a sputtering chamber having an inert gas and a mixture of nitrogen gas and hydrogen gas, wherein said nitrogen gas and hydrogen gas are provided at a mole ratio of nitrogen/hydrogen between about 0.5 and about 1. The hydrogen and nitrogen doped amorphous carbon overcoat exhibits excellent mechanical properties and tribological performance.

    摘要翻译： 制备了包含溅射在磁记录层上的碳外涂层的薄膜磁记录介质。 使用在具有惰性气体和氮气和氢气的混合物的溅射室中进行的溅射工艺将碳外涂层溅射在磁记录层上，其中所述氮气和氢气以氮的摩尔比提供 /氢在约0.5和约1之间。氢和氮掺杂的无定形碳外涂层表现出优异的机械性能和摩擦学性能。

    Alkylation of triphenylphosphate
    5.
    发明申请
    Alkylation of triphenylphosphate 失效
    磷酸三苯酯的烷基化

    公开(公告)号：US20050137425A1

    公开(公告)日：2005-06-23

    申请号：US10744466

    申请日：2003-12-23

    申请人： Alan Abramson ,  Anantha Desikan ,  Shuguang Zhang ,  Zongchao Zhang ,  James Liang

    发明人： Alan Abramson ,  Anantha Desikan ,  Shuguang Zhang ,  Zongchao Zhang ,  James Liang

    IPC分类号： C07F9/02 ,  C07F9/12

    CPC分类号： C07F9/12

    摘要： A process for the alkylation of triphenylphosphate by reaction of triphenylphosphate with an olefin in the presence of an effective amount of a solid acid catalyst selected from the group consisting of at least one zeolite, heteropolyacid or salt thereof, metal triflate, non-aryl group-containing metal sulfonic acid, metal halide Lewis acid, or compatible mixture of any such catalyst.

    摘要翻译： 在有效量的选自至少一种沸石，杂多酸或其盐的金属三氟甲磺酸酯，非芳基基团的烷基酯的固体酸催化剂存在下，通过使磷酸三苯酯与烯烃反应来烷基化磷酸三苯酯的方法， 含有金属磺酸，金属卤化物路易斯酸或任何这种催化剂的相容混合物。

    Alkylation of triphenylphosphate
    7.
    发明授权
    Alkylation of triphenylphosphate 失效
    磷酸三苯酯的烷基化

    公开(公告)号：US07074737B2

    公开(公告)日：2006-07-11

    申请号：US10744466

    申请日：2003-12-23

    申请人： Alan J. Abramson ,  Anantha Desikan ,  Shuguang Zhang ,  Zongchao Zhang ,  James Liang

    发明人： Alan J. Abramson ,  Anantha Desikan ,  Shuguang Zhang ,  Zongchao Zhang ,  James Liang

    IPC分类号： B01J31/00

    CPC分类号： C07F9/12

    摘要： A process for the alkylation of triphenylphosphate by reaction of triphenylphosphate with an olefin in the presence of an effective amount of a solid acid catalyst selected from the group consisting of at least one zeolite, heteropolyacid or salt thereof, metal triflate, non-aryl group-containing metal sulfonic acid, metal halide Lewis acid, or compatible mixture of any such catalyst.

    摘要翻译： 在有效量的选自至少一种沸石，杂多酸或其盐的金属三氟甲磺酸酯，非芳基基团的烷基酯的固体酸催化剂存在下，通过使磷酸三苯酯与烯烃反应来烷基化磷酸三苯酯的方法， 含有金属磺酸，金属卤化物路易斯酸或任何这种催化剂的相容混合物。