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公开(公告)号：EP4273303A1
公开(公告)日：2023-11-08
申请号：EP22171849.7
申请日：2022-05-05
发明人： Kühne, Sebastian , Laudien, Ulrich , Kaczmarek, Michal , Dziurun, Marta , Richter, Richard , Brunner, Heiko , Leonhard, Steven , Freese, Thomas
摘要： The present invention relates to a method for depositing a zinc-nickel alloy on a substrate, particularly to a method for electrolytically depositing a zinc-nickel alloy on a substrate, wherein a zinc-nickel deposition bath is utilized as a catholyte comprising at least one brightening agent, wherein the at least one brightening agent has a source which is substantially free of, preferably does not comprise, halogen anions. The present invention furthermore relates to a respective aqueous zinc-nickel deposition bath, a respective brightening agent, and a respective use of said brightening agent for replenishing in an aqueous zinc-nickel deposition bath.
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2.发明公开
公开(公告)号：EP4269652A1
公开(公告)日：2023-11-01
申请号：EP22171011.4
申请日：2022-04-29
摘要： The present invention refers to a method for black-passivating a zinc layer, a respective black-passivation composition comprising one or more than one blackening agent selected from the group consisting of formula (I), salts, and stereoisomers thereof, and a respective use of such blackening agents for black-passivating a zinc layer, wherein the zinc layer is substantially free of, preferably does not comprise, nickel.
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