Sintered body of alumina and partially stabilized zirconia, a process
for making the same and a method of preparing a powder for sintering
    14.
    发明授权
    Sintered body of alumina and partially stabilized zirconia, a process for making the same and a method of preparing a powder for sintering 失效
    氧化铝和部分稳定化氧化锆的烧结体,其制造方法以及烧结用粉末的制造方法

    公开(公告)号:US5338713A

    公开(公告)日:1994-08-16

    申请号:US66654

    申请日:1993-05-25

    IPC分类号: C04B35/119 C04B35/48

    CPC分类号: C04B35/119

    摘要: A powder for sintering is prepared by the wet mixing of a finely and uniformly divided alumina powder of high purity having a primary particle diameter not exceeding 0.15 micron and an average particle diameter not exceeding 0.3 micron, and a partially stabilized zirconia powder of high purity having an average particle diameter not exceeding 0.3 micron. After granulation and molding, the mixed powder is sintered at a temperature of 1300.degree. C. to 1500.degree. C. to make a sintered body having an average grain size not exceeding 0.7 micron.

    摘要翻译: 通过湿法混合一次粒径不超过0.15微米,平均粒径不超过0.3微米的高纯度均匀分散的氧化铝粉末和高纯度部分稳定化的氧化锆粉末,制备烧结粉末, 平均粒径不超过0.3微米。 造粒和成型后,将混合粉末在1300℃〜1500℃的温度下烧结,制成平均粒径不超过0.7微米的烧结体。

    Magnetic recording tape cartridge
    15.
    发明授权
    Magnetic recording tape cartridge 失效
    磁记录带盒

    公开(公告)号:US4447020A

    公开(公告)日:1984-05-08

    申请号:US377825

    申请日:1982-05-13

    IPC分类号: G11B23/087 G03B1/04 G11B15/32

    CPC分类号: G11B23/08721

    摘要: A magnetic recording tape cartridge comprising a pair of tape reels each having a bottom flange with a plurality of engaging teeth on the peripheral edge of the bottom flange and a tape reel stopping means for engagement of one of the engaging teeth of the tape reel, the tape reel stopping means being biassed by a resilient plate spring to prevent undesired rotation of the tape reel.

    摘要翻译: 一种磁记录带盒,包括一对磁带盘,每个磁带盘具有在底部凸缘的周缘上具有多个接合齿的底部凸缘和用于与磁带卷轴的一个接合齿接合的磁带盘停止装置, 磁带卷轴停止装置被弹性板簧偏压以防止磁带卷盘的不希望的旋转。