Chromate coating of zinc surfaces
    1.
    发明授权
    Chromate coating of zinc surfaces 失效
    锌表面的铬酸盐涂层

    公开(公告)号:US4749418A

    公开(公告)日:1988-06-07

    申请号:US894595

    申请日:1986-08-08

    IPC分类号: C23C22/33 C23C22/38 C23F11/18

    CPC分类号: C23C22/38

    摘要: A chromate composition and process provide improved corrosion resistance and paint adhesion for zinc surfaces. The aqueous acidic composition contains hexavalent and trivalent chromium phosphate and fluorozirconate at prescribed concentrations. The composition is applied and dried without rinsing to yield a chromium coating weight of 10-200 mg/m.sup.2.

    摘要翻译: 铬酸盐组合物和工艺为锌表面提供了改善的耐腐蚀性和涂料附着力。 水性酸性组合物含有规定浓度的六价和三价铬磷酸盐和氟锆酸盐。 在不冲洗的情况下施用和干燥组合物,得到10-200mg / m 2的铬涂层重量。