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    Mirror and method of making same
    4.
    发明授权
    Mirror and method of making same 失效
    镜子和制作方法

    公开(公告)号：US4074416A

    公开(公告)日：1978-02-21

    申请号：US722844

    申请日：1976-09-13

    申请人： Werner R. Rambauske ,  John J. Grabowski

    发明人： Werner R. Rambauske ,  John J. Grabowski

    IPC分类号： B21B1/00 ,  B24B13/015 ,  B24B17/08 ,  C23C4/10 ,  C23C4/18 ,  G02B5/08 ,  H05H1/22

    CPC分类号： G21B1/23 ,  B21B1/00 ,  B24B13/015 ,  B24B17/08 ,  C23C4/10 ,  C23C4/18 ,  G02B5/08 ,  Y10S359/90 ,  Y10S451/913 ,  Y10T29/49984 ,  Y10T29/49986 ,  Y10T82/148

    摘要： A mirror, and method of making same, is disclosed. The mirror includes a metallic base material having a low coefficient of thermal expansion, an intermediate layer bonded to the base by a plasma spray process and a reflecting surface overlying the intermediate layer, the coefficients of thermal expansion of the materials of the intermediate layer and the reflecting surface differing from each other and from the coefficient of thermal expansion of the base material.The disclosed method contemplates: The casting of a mirror blank from a material having a low coefficient of thermal expansion and machining the surface to a desired contour, with stress-relieving heat treatments before and after such machining; plasma spraying an intermediate coating of a material having a Rockwell hardness equal to, or greater than, 60; grinding the intermediate coating to a desired contour and lapping and cleaning such ground coating to produce an optically smooth contoured surface; and finally plating such surface to provide the desired mirror surface.

    摘要翻译： 公开了一种镜子及其制造方法。 反射镜包括具有低热膨胀系数的金属基材料，通过等离子体喷涂工艺粘合到基底的中间层和覆盖中间层的反射表面，中间层的材料的热膨胀系数和 反射面与基材的热膨胀系数不同。