公开(公告)号：US20220411934A1

公开(公告)日：2022-12-29

申请号：US17778033

申请日：2020-12-18

申请人： Atotech Deutschland GmbH & Co. KG

发明人： Lukas BEDRNIK ,  Sebastian HAHN ,  Katrin KRÜGER

IPC分类号： C23C22/53

摘要： The present inventions refers to a passivation composition for depositing a chromium-comprising passivation layer on a zinc or zinc-nickel coated substrate, the composition comprising: (i) trivalent chromium ions, (ii) at least one complexing agent for the trivalent chromium ions, being different from the at least one corrosion-inhibiting agent, and (iii) at least one corrosion-inhibiting agent, which is (A) one or more than one substituted azole compound and/or salts thereof, together in a total concentration below 10 mg/L, based on the total volume of the passivation composition, and/or (B) one or more than one unsubstituted or substituted aliphatic organic acid with at least one mercapto-group and/or salts thereof, together in a total concentration in a range from 0.001 mg/L to 100 mg/L, based on the total volume of the passivation composition.

公开(公告)号：US20210246565A1

公开(公告)日：2021-08-12

申请号：US15734257

申请日：2019-06-03

申请人： ATOTECH DEUTSCHLAND GMBH

发明人： Michal KACZMAREK ,  Zdenek STARKBAUM ,  Sebastian HAHN ,  Ercan KARAPINAR

IPC分类号： C25D3/22 ,  C25D3/56

摘要： The present invention is related to an acidic zinc or zinc-nickel alloy electroplating bath for depositing a zinc or zinc-nickel alloy layer and a method for zinc or zinc-nickel alloy electroplating making use of such an electroplating bath.