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    Coating system for superalloys
    1.
    发明授权
    Coating system for superalloys 失效
    超级合金涂层系统

    公开(公告)号：US3874901A

    公开(公告)日：1975-04-01

    申请号：US35366073

    申请日：1973-04-23

    申请人： GEN ELECTRIC

    发明人： RAIRDEN III JOHN R

    IPC分类号： C23C14/06 ,  C23C10/28 ,  C23C14/14 ,  C23C14/16 ,  C23C14/58 ,  C23C26/00 ,  B44D1/14

    CPC分类号： C23C14/5806 ,  C23C14/16 ,  C23C14/58 ,  C23C14/5893 ,  C23C26/00

    摘要： A protective coating system is provided for nickel-base and cobalt-base superalloys which is capable of imparting oxidation and corrosion resistance at elevated temperatures. The superalloy body is first coated by physical vapor deposition with a composition consisting essentially of chromium, aluminum and, optionally, a member selected from the group consisting of yttrium and the rare earth elements and at least one element selected from the group consisting of iron, cobalt and nickel. Thereafter the body is coated with an overlayer of aluminum by physical vapor deposition and heat treated to cause the interdiffusion of aluminum into the first coating layer and thereby greatly enhance the hot corrosion and oxidation resistance of the coating system.

    摘要翻译： 提供了一种用于镍基和钴基超级合金的保护涂层系统，其能够在高温下赋予氧化和耐腐蚀性。 首先通过物理气相沉积来涂覆超级合金体，所述组合物主要由铬，铝和任选的选自钇和稀土元素的组分组成，以及至少一种选自铁， 钴和镍。 此后，通过物理气相沉积和热处理将铝体覆盖在铝层上，引起铝向第一涂层的相互扩散，从而大大增强涂层体系的热腐蚀和抗氧化性。