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    • 23. 发明授权
    • Method for manufacturing magnetic hard disk
    • 制造磁性硬盘的方法
    • US5705234A
    • 1998-01-06
    • US779630
    • 1997-01-07
    • Motokazu YamamotoNoriko Nakamura
    • Motokazu YamamotoNoriko Nakamura
    • C23C14/14G11B5/84H05H1/48H05H1/32
    • G11B5/8404H05H1/48
    • An object of the present invention is to provide a method for manufacturing a magnetic hard disk wherein a magnetic material layer adhered on a surface of a substrate of the magnetic hard disk has a flat surface. A method for manufacturing a magnetic hard disk comprising steps of: structurally transforming a surface of an amorphous Ni--P alloy film layer formed a substrate (10) of the magnetic hard disk; and adhering a magnetic material layer on the surface of a substrate (10), wherein the step of structurally transforming the a-Ni--P alloy film layer is a step of heating only a desired portion of the surface of the substrate (10) by an electric discharge to generate Ni and crystallized compounds of Ni and P only at the desired portion (T) of the surface thereof. The electric discharge in the step of structurally transforming the a-Ni--P alloy film layer is carried out by applying a discharge potential between at least one electric discharger (11) and a metallic table (12) as an electrode which carries the substrate (10) thereon, the electric discharger (11) being positioned in opposite to the surface of the substrate (10).
    • 本发明的目的是提供一种磁性硬盘的制造方法,其中粘附在磁性硬盘的基板的表面上的磁性材料层具有平坦的表面。 一种制造磁性硬盘的方法,包括以下步骤:对形成所述磁性硬盘的基板(10)的非晶Ni-P合金膜层的表面进行结构转化; 在所述基板(10)的表面上附着磁性材料层,其中,所述a-Ni-P合金膜层的结构变形步骤是仅将基板(10)的表面的期望部分加热的工序为: 在其表面的期望部分(T)仅产生Ni和Ni和P的结晶化合物的放电。 在a-Ni-P合金膜层的结构转化步骤中的放电是通过在至少一个放电器(11)和金属台(12)之间施加放电电位,作为承载衬底的电极 10),放电器(11)位于与基板(10)的表面相对的位置。