IMMERSION TIN SILVER PLATING IN ELECTRONICS MANUFACTURE
    3.
    发明申请
    IMMERSION TIN SILVER PLATING IN ELECTRONICS MANUFACTURE 有权
    电子制造中的镀银镀银

    公开(公告)号:US20110097597A1

    公开(公告)日:2011-04-28

    申请号:US12607375

    申请日:2009-10-28

    IPC分类号: B32B15/01 B05D1/18

    摘要: A method is provided for depositing a whisker resistant tin-based coating layer on a surface of a copper substrate. The method is useful for preparing an article comprising a copper substrate having a surface; and a tin-based coating layer on the surface of the substrate, wherein the tin-based coating layer has a thickness between 0.5 micrometers and 1.5 micrometers and has a resistance to formation of copper-tin intermetallics, wherein said resistance to formation of copper-tin intermetallics is characterized in that, upon exposure of the article to at least seven heating and cooling cycles in which each cycle comprises subjecting the article to a temperature of at least 217° C. followed by cooling to a temperature between about 20° C. and about 28° C., there remains a region of the tin coating layer that is free of copper that is at least 0.25 micrometers thick.

    摘要翻译: 提供了在铜基板的表面上沉积耐晶须锡基涂层的方法。 该方法可用于制备包含具有表面的铜基材的制品; 以及在所述基板的表面上的锡基涂层,其中所述锡基涂层的厚度为0.5微米至1.5微米,并且具有形成铜 - 锡金属间化合物的阻力,其中所述耐铜 - 锡金属间化合物的特征在于,当制品暴露于至少七个加热和冷却循环时,其中每个循环包括使制品经受至少217℃的温度,然后冷却至约20℃的温度。 并且约28℃,仍然存在不超过至少0.25微米厚的铜的锡涂层的区域。

    Immersion tin silver plating in electronics manufacture
    4.
    发明授权
    Immersion tin silver plating in electronics manufacture 有权
    在电子制造中浸锡锡镀银

    公开(公告)号:US09175400B2

    公开(公告)日:2015-11-03

    申请号:US12607375

    申请日:2009-10-28

    IPC分类号: C23C18/54 C23C18/48

    摘要: A method is provided for depositing a whisker resistant tin-based coating layer on a surface of a copper substrate. The method is useful for preparing an article comprising a copper substrate having a surface; and a tin-based coating layer on the surface of the substrate, wherein the tin-based coating layer has a thickness between 0.5 micrometers and 1.5 micrometers and has a resistance to formation of copper-tin intermetallics, wherein said resistance to formation of copper-tin intermetallics is characterized in that, upon exposure of the article to at least seven heating and cooling cycles in which each cycle comprises subjecting the article to a temperature of at least 217° C. followed by cooling to a temperature between about 20° C. and about 28° C., there remains a region of the tin coating layer that is free of copper that is at least 0.25 micrometers thick.

    摘要翻译: 提供了在铜基板的表面上沉积耐晶须锡基涂层的方法。 该方法可用于制备包含具有表面的铜基材的制品; 以及在所述基板的表面上的锡基涂层,其中所述锡基涂层的厚度为0.5微米至1.5微米,并且具有形成铜 - 锡金属间化合物的阻力,其中所述耐铜 - 锡金属间化合物的特征在于,当制品暴露于至少七个加热和冷却循环时,其中每个循环包括使制品经受至少217℃的温度,然后冷却至约20℃的温度。 并且约28℃,仍然存在不超过至少0.25微米厚的铜的锡涂层的区域。

    Process for improving wear on conductor rolls in electroplating of steel
surfaces
    6.
    发明授权
    Process for improving wear on conductor rolls in electroplating of steel surfaces 失效
    改善钢表面电镀导体辊磨损的工艺

    公开(公告)号:US4840712A

    公开(公告)日:1989-06-20

    申请号:US256977

    申请日:1988-10-13

    IPC分类号: C25D5/04 C25D21/08

    CPC分类号: C25D21/08 C25D5/04

    摘要: The invention relates to an improvement in a process for electrodepositing a protective coating of zinc or a zinc alloy on steel or other metal substrates in which the process utilizes a metal conductor roll or conductor roll with metal sleeves and contains a rinsing bath with a mineral acid solution associated with the roll, the improvement comprises providing at least 50 ppm of hydrogen peroxide or a peroxydisulfate compound in the mineral acid bath.

    摘要翻译: 本发明涉及在钢或其他金属基材上电沉积锌或锌合金保护涂层的方法的改进,其中该方法利用金属导体辊或导体辊与金属套筒并且含有无机酸的漂洗浴 与辊相关的溶液,改进包括在无机酸浴中提供至少50ppm的过氧化氢或过氧化二硫酸盐化合物。