公开(公告)号：US20220411934A1

公开(公告)日：2022-12-29

申请号：US17778033

申请日：2020-12-18

Applicant: Atotech Deutschland GmbH & Co. KG

Inventor： Lukas BEDRNIK ,  Sebastian HAHN ,  Katrin KRÜGER

IPC: C23C22/53

Abstract: 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：US20170275774A1

公开(公告)日：2017-09-28

申请号：US15503735

申请日：2015-10-19

Applicant: Atotech Deutschland GmbH

Inventor： Michal KACZMAREK ,  Antje RICHTER ,  Lukas BEDRNIK ,  Eric SIBÜRGE

IPC: C25D3/22 ,  C25D3/56

CPC classification number: C25D3/22 ,  C25D3/565

Abstract: The present invention relates to an acidic zinc or zinc-nickel alloy plating bath composition comprising a source for zinc ions, optionally a source for nickel ions, a source for chloride ions and at least one dithiocarbamyl alkyl sulfonic acid or salt thereof. Said plating bath composition and the corresponding plating method result in zinc or zinc-nickel alloy layers having an improved throwing power and thickness distribution, particularly when plating substrates having a complex shape and/or in rack-and-barrel plating.

公开(公告)号：US20170029971A1

公开(公告)日：2017-02-02

申请号：US15290058

申请日：2016-10-11

Applicant: Atotech Deutschland GmbH

Inventor： Lukas BEDRNIK ,  Frantisek HAAS ,  Nadine LANG ,  Roland VOGEL

IPC: C25D3/56

CPC classification number: C25D3/565 ,  B32B15/013 ,  C25D5/48 ,  Y10T428/12792

Abstract: A process for depositing a zinc-iron alloy layer material having a body centred cubic crystal structure of the Γ-phase, a (330) texture and an iron content of 12 to 20 wt.-% including the steps (i) providing a metallic substrate, (ii) contacting the substrate with an alkaline aqueous zinc-iron alloy plating bath containing 4 to 6 g/l zinc ions, 1 to 3 g/l iron ions, 25 to 35 g/l hydroxyl ions, 0.5 to 2.5 g/l of a quaternary ammonium polymer and at least one complexing agent selected from the group consisting of hydroxyl carboxylic acids and salts thereof and simultaneously applying a current to the substrate. The zinc alloy layer material provides a high corrosion protection to metallic substrates, has a high hardness and a bright appearance.

Abstract translation: 一种用于沉积具有Γ相，（330）织构和铁含量为12至20重量％的体心立方晶体结构的锌 - 铁合金层材料的方法，包括步骤（i）提供金属 基板，（ii）使基板与含有4〜6g / l的锌离子，1〜3g / l的铁离子，25〜35g / l的羟基离子，0.5〜2.5g的碱土金属锌 - 铁合金电镀液 / l的季铵聚合物和至少一种选自羟基羧酸及其盐的络合剂，同时向基材施加电流。 锌合金层材料为金属基材提供高度的防腐蚀性，硬度高，外观美观。