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    Magnetic recording media comprising a silicon carbide corrosion barrier layer and a c-overcoat
    9.
    发明授权
    Magnetic recording media comprising a silicon carbide corrosion barrier layer and a c-overcoat 失效
    磁记录介质包括碳化硅腐蚀阻挡层和c覆盖层

    公开(公告)号：US06572958B1

    公开(公告)日：2003-06-03

    申请号：US09621530

    申请日：2000-07-21

    申请人： Kueir-Weei Chour ,  Liji Huang ,  Jie-Ming Yu ,  Kuo-Hsing Hwang ,  Chung Shih ,  Lin Huang ,  Charles Leu ,  Qixu Chen ,  Rajiv Yadav Ranjan

    发明人： Kueir-Weei Chour ,  Liji Huang ,  Jie-Ming Yu ,  Kuo-Hsing Hwang ,  Chung Shih ,  Lin Huang ,  Charles Leu ,  Qixu Chen ,  Rajiv Yadav Ranjan

    IPC分类号： G11B572

    CPC分类号： G11B5/8408 ,  G11B5/72 ,  Y10T428/2495 ,  Y10T428/265

    摘要： A magnetic recording medium is provided with a dual layer protective overcoat system comprising a SiC corrosion barrier layer and a carbon-containing protective overcoat thereon. The SiC layer effectively prevents or significantly reduces Co and Ni diffusion to the medium surface. Embodiments include magnetic recording media comprising a SiC corrosion barrier layer over a magnetic layer, an overlying protective layer of amorphous hydrogenated carbon, amorphous nitrogenated carbon or amorphous hydrogen-nitrogenated carbon, and a lubricant topcoat thereon. Embodiments of the present invention further include magnetic recording media comprising Ni—P plated aluminum, Ni-plated glass or non-conductive substrates including glass, glass-ceramic and ceramic materials. Embodiments of the present invention further include a dual protective overcoat system having a combined thickness less than about 100 Å, such as less than about 75 Å, e.g., less than about 50 Å, with the SiC corrosion barrier layer having a thickness ranging from 1 Å to 40 Å.

    摘要翻译： 磁记录介质设置有双层保护外涂层系统，其包括SiC腐蚀阻挡层和其上的含碳保护外涂层。 SiC层有效地防止或显着减少Co和Ni扩散到介质表面。 实施例包括在磁性层上包含SiC腐蚀阻挡层的磁记录介质，无定形氢化碳的上覆保护层，无定形氮化碳或无定形氢化氮，以及其上的润滑剂面涂层。 本发明的实施例还包括包含Ni-P镀铝，镀Ni玻璃或包括玻璃，玻璃 - 陶瓷和陶瓷材料的非导电衬底的磁记录介质。 本发明的实施方案还包括双重保护外涂层系统，其具有小于约，例如小于约，例如小于约50埃的组合厚度，其中SiC腐蚀阻挡层的厚度范围为1 Å至40Å。