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    • 2. 发明授权
    • Composition for the alkaline passivation of zinc surfaces
    • 锌表面的碱性钝化的组成
    • US09228088B2
    • 2016-01-05
    • US13566155
    • 2012-08-03
    • Jan-Willem BrouwerJens KroemerWilliam E. FristadAnnette Willer
    • Jan-Willem BrouwerJens KroemerWilliam E. FristadAnnette Willer
    • C23C22/60C23C22/34C23C22/78C23C22/83C09D5/08C23C22/73
    • C09D5/08C23C22/34C23C22/60C23C22/73C23C22/78
    • The present invention relates to an aqueous alkaline composition (A) for alkaline passivation of metallic components comprising at least in part surfaces of zinc or zinc alloys, containing iron(III) ions, phosphate ions, and one or more complexing agents, where a free alkalinity ranges from 1 to 6 points, and the pH is at least 11. The aqueous compositions (A) can additionally contain nonionic surfactants, so that such compositions are suitable for use in a method in which both cleaning and alkaline passivation of the metallic component occur in one step. The present invention further relates to a method for alkaline passivation of metallic components by contacting them with composition (A), and further a method for surface treatment in automobile body production, in which the alkaline passivation step using composition (A) is followed by an acid passivation step using a composition (B).
    • 本发明涉及用于金属组分的碱性钝化的碱性水溶液组合物(A),其包含至少部分含有铁(III)离子,磷酸根离子和一种或多种络合剂的锌或锌合金表面,其中, 碱度范围为1至6个点,pH值至少为11.水性组合物(A)可另外含有非离子表面活性剂,因此这些组合物适用于金属组分的清洁和碱性钝化两者的方法 发生在一个步骤。 本发明还涉及一种通过使其与组合物(A)接触来进行金属组分的碱钝化的方法,还涉及一种使用组合物(A)的碱性钝化步骤之后是一种用于汽车车身制造中的表面处理方法, 酸钝化步骤使用组合物(B)。