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1.发明申请公开(公告)号：US20150090368A1
公开(公告)日：2015-04-02
申请号：US14395091
申请日：2013-04-18
摘要： The present invention provides a blackening treatment method for a black Cr—Co alloy plating film, the method comprising bringing a black Cr—Co alloy plating film having a Cr content of 1 to 15 wt. % into contact with a blackening treatment solution comprising an aqueous solution with a pH value of −1 to 5. According to the present invention, the blackish color of a less blackish plating film formed from a plating bath containing trivalent chromium is enhanced to further improve decorativeness. Furthermore, the corrosion resistance of the film can be more improved by performing electrolytic chromate treatment after blackening treatment.
摘要翻译： 本发明提供一种黑色Cr-Co合金镀膜的黑化处理方法，该方法包括使Cr含量为1〜15重量％的黑色Cr-Co合金镀膜。 ％与含有pH值为-1至5的水溶液的黑化处理溶液接触。根据本发明，由含有三价铬的电镀浴形成的较少黑色的镀膜的黑色被增强以进一步改善 装饰性 此外，通过在黑化处理后进行电解铬酸盐处理，可以进一步提高膜的耐腐蚀性。
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公开(公告)号：US09920416B2
公开(公告)日：2018-03-20
申请号：US14395091
申请日：2013-04-18
IPC分类号： C23C22/58 , C23C8/40 , C25D5/48 , C25D9/08 , C25D3/04 , C25D3/06 , C25D3/56 , C23C8/42 , C23C22/00
摘要： The present invention provides a blackening treatment method for a black Cr—Co alloy plating film, the method comprising bringing a black Cr—Co alloy plating film having a Cr content of 1 to 15 wt. % into contact with a blackening treatment solution comprising an aqueous solution with a pH value of −1 to 5. According to the present invention, the blackish color of a less blackish plating film formed from a plating bath containing trivalent chromium is enhanced to further improve decorativeness. Furthermore, the corrosion resistance of the film can be more improved by performing electrolytic chromate treatment after blackening treatment.
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