Electrodeposition of bright nickel
    2.
    发明授权
    Electrodeposition of bright nickel 失效
    电镀镍

    公开(公告)号:US3661731A

    公开(公告)日:1972-05-09

    申请号:US3661731D

    申请日:1970-03-16

    Applicant: ALLIED CHEM

    CPC classification number: C25D3/12

    Abstract: Acid nickel plating bath for obtaining bright nickel deposits, said bath being of the chloride, sulfate, fluoborate or sulfamate type and containing a brightener mixture comprising the disodium salt of methylene bis naphthalene sulfonic acid and a second component selected from coumarin, piperonal bisulfite complex, sodium beta-styrene sulfonate, benzimidazole and mixtures thereof, with the proviso that benzimidazole is used only when greater than 50 mole percent of nickel salt used in the bath is nickel fluoborate.

    Abstract translation: 用于获得亮镍沉积物的酸性镍电镀浴,所述浴是氯化物,硫酸盐,氟硼酸盐或氨基磺酸盐型,并且含有包含亚甲基双萘磺酸的二钠盐和选自香豆素,胡椒醛亚硫酸氢盐络合物的第二组分的增白剂混合物, β-苯乙烯磺酸钠,苯并咪唑及其混合物,条件是只有当浴中使用的镍盐的大于50摩尔%为氟硼酸锂时,才使用苯并咪唑。

    Zinc electroplating process and acidic zinc fluoborate electrolyte therefor
    3.
    发明授权
    Zinc electroplating process and acidic zinc fluoborate electrolyte therefor 失效
    ZINC电镀工艺及其酸性锌电解液

    公开(公告)号:US3655533A

    公开(公告)日:1972-04-11

    申请号:US3655533D

    申请日:1970-11-12

    Applicant: ALLIED CHEM

    CPC classification number: C25D3/22

    Abstract: An acidic zinc electroplating bath comprising zinc fluoborate dissolved in an aqueous liquid containing as an iron- and metal oxide-deposition inhibitor a small effective amount of a mixture of a 4-hydroxy-, 4-alkyl- or aryl-, 5-acyl- or aroyl-piperidine and thiourea or N-substituted derivative thereof. The invention also includes an improved process for zinc-electroplating ferrous metals from such bath.

    Abstract translation: 一种酸性锌电镀浴,其包含溶解在含有铁和金属氧化物沉积抑制剂的含水液体中的氟硼酸锌,有效量的4-羟基-4-烷基 - 或芳基-5-酰基 - 或芳酰基 - 哌啶和硫脲或其N-取代的衍生物。 本发明还包括从这种浴中锌电镀黑色金属的改进方法。

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