Magnetic head having core parts joined by low-melting point crystallized
glass with composite gap
    1.
    发明授权
    Magnetic head having core parts joined by low-melting point crystallized glass with composite gap 失效
    磁头具有通过具有复合间隙的低熔点结晶玻璃连接的芯部分

    公开(公告)号:US5170301A

    公开(公告)日:1992-12-08

    申请号:US762739

    申请日:1991-09-18

    IPC分类号: G11B5/187 G11B5/21 G11B5/23

    摘要: A head core includes a pair of core parts made of a magnetic metallic material and bonded together by (1) a gap material which is a low-melting-point crystallized glass which serves as the bonding material and (2) non-magnetic material layers provided between the glass and the gap surfaces of the core parts. The non-magnetic material layers effectively prevent reaction between the low-melting-point crystallized glass and the metallic magnetic material of the core during the bonding heat treatment. The strength of the magnetic gap, as well as dimensional precision of the same, is enhanced as compared with the conventional arrangement of the same gap size in which bonding is accomplished by a low-melting-point non-crystallizable glass, even when the bonding is executed at the same temperature. The invention remarkably improves magnetic head production yields and reliability.

    摘要翻译: 头芯包括由磁性金属材料制成的一对芯部,通过(1)作为接合材料的低熔点结晶玻璃的间隙材料和(2)非磁性材料层 设置在玻璃和芯部分的间隙表面之间。 非磁性材料层在接合热处理期间有效地防止低熔点结晶玻璃与芯的金属磁性材料之间的反应。 与通过低熔点不可结晶玻璃进行接合的相同间隙尺寸的常规布置相比,磁隙的强度以及其尺寸精度提高了,即使当接合 在相同的温度下执行。 本发明显着提高了磁头产量和可靠性。

    Process of manufacturing a magnetic head
    2.
    发明授权
    Process of manufacturing a magnetic head 失效
    磁头制造工艺

    公开(公告)号:US5208971A

    公开(公告)日:1993-05-11

    申请号:US700461

    申请日:1991-05-15

    IPC分类号: G11B5/127 G11B5/105 G11B5/147

    摘要: A method of making a magnetic head wherein a metal material is sandwiched between non-magnetic substrates, including the steps of: forming a magnetic metal material at least on one side of a non-magnetic substrate; forming by sputtering a crystallization glass layer at least on one side of a compound substrate prepared by forming an anti-diffusion film on the magnetic metal material; then heat-treating in an oxygen containing atmosphere the compound substrate on which the crystallization glass has been formed; further laminating together a number of the aforesaid compound substrates under pressure and then processing (such as by cutting, grinding, and heat-treating) the laminate.

    摘要翻译: 一种制造磁头的方法,其中金属材料夹在非磁性衬底之间,包括以下步骤:在非磁性衬底的至少一侧形成磁性金属材料; 通过在通过在磁性金属材料上形成抗扩散膜制备的复合基板的至少一面上溅射结晶玻璃层而形成; 然后在含氧气氛中对其上形成结晶玻璃的复合基板进行热处理; 在压力下进一步层压在一起的上述复合基板,然后对层压体进行加工(例如通过切割,研磨和热处理)。