Method for producing a magnetic recording medium having a carbon
protective layer
    2.
    发明授权
    Method for producing a magnetic recording medium having a carbon protective layer 失效
    一种具有碳保护层的磁记录介质的制造方法

    公开(公告)号:US5798135A

    公开(公告)日:1998-08-25

    申请号:US724513

    申请日:1996-09-30

    摘要: A ferromagnetic metal thin film recording medium having a nonmagnetic substrate, a ferromagnetic metal thin film formed on the nonmagnetic substrate, a dry etched layer which is formed in a surface layer of the ferromagnetic metal thin film and contains oxygen atoms in a higher concentration than the remaining part of the ferromagnetic metal thin film, a hard carbonaceous film formed on the dry etched layer of the ferromagnetic metal thin film, a lubricant layer formed on said hard carbonaceous film, and optionally a modified layer which is formed on the hard carbonaceous film and has a thickness of less than 3 nm, and comprises carbon, nitrogen and oxygen atoms with an atomic ratio of nitrogen to carbon being at least 0.8%, which recording medium has improved running stability, durability and weatherability while maintaining electromagnetic conversion characteristics.

    摘要翻译: 具有非磁性基板的铁磁性金属薄膜记录介质,形成在非磁性基板上的强磁性金属薄膜,形成在强磁性金属薄膜的表面层中并且含有比 铁磁金属薄膜的剩余部分,形成在强磁性金属薄膜的干蚀刻层上的硬质碳质膜,形成在所述硬质碳质膜上的润滑剂层,以及可选地形成在硬质碳膜上的改性层,以及 具有小于3nm的厚度,并且包含氮与碳的原子比至少为0.8%的碳,氮和氧原子,该记录介质具有改善的运行稳定性,耐久性和耐候性,同时保持电磁转换特性。