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Aqueous,alkaline,cyanide-free bath for the galvanic deposition of zinc and zinc alloy coatings

机译:水性,碱性,无氰化物浴,用于电镀锌和锌合金涂层

摘要

The invention relates to an aqueous, alkaline cyanide-free electrolyte bath for de-positing zinc and zinc alloy coatings on substrate surfaces comprising (a) a source for zinc ions and optionally a source for further metal ions, (b) hydroxide ions, (c) a polymer of general formula I which is soluble in the bath and (d) at least one pyridinium compound of general formula II or III. The electrolyte bath is suitable for the galvanic deposition of bright and even zinc and zinc alloy coatings.;
机译:本发明涉及一种用于在基底表面上沉积锌和锌合金涂层的无碱金属的含水电解质浴,其包括:(a)锌离子源和任选的其他金属离子源,(b)氢氧根离子,( c)可溶于浴中的通式I的聚合物和(d)至少一种通式II或III的吡啶鎓化合物。电解质浴适用于明亮甚至锌和锌合金涂层的电镀沉积。

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