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    • 9. 发明授权
    • Method of treating concrete structures
    • 处理混凝土结构的方法
    • US06399021B1
    • 2002-06-04
    • US09608843
    • 2000-06-30
    • Robert L. HeimannWilliam M. DaltonDavid R. WebbNancy M. McGowan
    • Robert L. HeimannWilliam M. DaltonDavid R. WebbNancy M. McGowan
    • C23F1100
    • C23F11/00C09D1/00C09D1/02C09D5/08C23C28/04C23C30/00D07B1/144E04C5/015F16D69/02F16D2250/0038G06F9/3808G06F9/383G06F9/3834G06F9/3842
    • A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products, and novel combinations thereof with metals, for preventing or retarding corrosion, as well as methods for applying the buffered compositions to metal products, such that corrosion protection of the products is achieved. The methods include an in-situ application to existing structures with metal reinforcement as well as applications to metal products during manufacture. Generally, the compositions may be in various forms and comprise one or more layers, at least one of which includes a water repellent but water vapor permeable carrier component and one or more pH buffer components. The buffer is selected to produce a passivating pH at the surface of the metal. The compositions are environmentally friendly and are capable of replacing chromates which have been traditionally used with zinc and zinc alloys to inhibit corrosion of metals but which are potentially harmful to the environment.
    • 公开了一种通过钝化金属来抑制含铁金属和其它金属的腐蚀的系统。 该系统包括可应用于金属产品的新型缓冲组合物及其与金属的新型组合,用于防止或延缓腐蚀,以及将缓冲组合物施用于金属产品的方法,从而实现产品的防腐蚀。 这些方法包括在金属加固的现有结构中的现场应用以及在制造期间对金属产品的应用。 通常,组合物可以是各种形式并且包含一个或多个层,其中至少一个包括拒水性但水蒸气可渗透的载体组分和一种或多种pH缓冲剂组分。 选择缓冲液以在金属的表面产生钝化pH。 组合物是环境友好的,并且能够替代传统上与锌和锌合金一起使用的铬酸盐以抑制金属的腐蚀,但是对环境有潜在的危害。