Ceramic composition having low friction coefficient at high operating
temperatures
    4.
    发明授权
    Ceramic composition having low friction coefficient at high operating temperatures 失效
    在高工作温度下具有低摩擦系数的陶瓷组合物

    公开(公告)号:US4892849A

    公开(公告)日:1990-01-09

    申请号:US198936

    申请日:1988-05-26

    IPC分类号: C04B41/00 C04B41/80

    CPC分类号: C04B41/0027 C04B41/80

    摘要: A composite of a first metal ion and a ceramic composition in the near surface region of the composition is formed by ion mixing of the first metal with the ceramic composition. The composite has been oxidized at high temperatures thereby resulting in an oxide gradient layer in the surface of the ceramic composition. Alternatively, a second metal ion is ion mixed with the first metal ion in the near surface region of the ceramic composition and then oxidized at high temperatures to form an oxide gradient layer in the surface of the ceramic composition.

    摘要翻译: 通过第一金属与陶瓷组合物的离子混合形成组合物的近表面区域中的第一金属离子和陶瓷组合物的复合物。 复合材料在高温下被氧化,从而在陶瓷组合物的表面形成氧化物梯度层。 或者,第二金属离子与陶瓷组合物的近表面区域中的第一金属离子离子混合,然后在高温下氧化,以在陶瓷组合物的表面形成氧化物梯度层。

    Ion sputter textured graphite
    5.
    发明授权
    Ion sputter textured graphite 失效
    离子溅射织构石墨

    公开(公告)号:US4349424A

    公开(公告)日:1982-09-14

    申请号:US264378

    申请日:1981-05-15

    摘要: A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons.An ion flux having an energy between 500 eV and 1000 eV and a current density between 1.0 mA/cm.sup.2 and 6.0 mA/cm.sup.2 produces surface roughening or texturing which is in the form of needles or spines.Such textured surfaces are especially useful as anode collector plates in high efficiency electron tube devices.

    摘要翻译: 热解石墨的特殊纹理表面表现出非常低的二次电子产率,并且在高能量一次电子碰撞后反射的一次电子数量减少。 具有500eV至1000eV之间的能量和1.0mA / cm 2至6.0mA / cm 2之间的电流密度的离子通量产生呈针状或棘形形式的表面粗糙化或纹理化。 这种纹理表面在高效电子管装置中特别适用于阳极集电板。