US 12,249,810 B2
Pretreatment method for pretreating components prior to electroplating
Christoph Roland Hoelzl, Kornwestheim (DE); Martina Bubrin, Stuttgart (DE); Milan Pilaski, Mannheim (DE); and Tim Bergmann, Hemer (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 17/442,430
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Mar. 18, 2020, PCT No. PCT/EP2020/057417
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2020/193307, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 10 2019 204 225.2 (DE), filed on Mar. 27, 2019.
Prior Publication US 2022/0190562 A1, Jun. 16, 2022
Int. Cl. H01T 21/02 (2006.01); C23G 1/08 (2006.01); C23G 1/19 (2006.01); C25D 5/36 (2006.01); C25D 7/00 (2006.01); C25D 7/04 (2006.01); C25D 17/08 (2006.01); C25D 17/10 (2006.01); C25F 1/06 (2006.01)
CPC H01T 21/02 (2013.01) [C23G 1/08 (2013.01); C23G 1/19 (2013.01); C25D 5/36 (2013.01); C25D 7/003 (2013.01); C25D 7/04 (2013.01); C25D 17/08 (2013.01); C25D 17/10 (2013.01); C25F 1/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A coating method for coating a component which is formed of at least two different materials, the method comprising the following steps:
pretreating the component using a pretreatment method including:
alkaline degreasing the component,
chemical pickling the component in a first pickling medium,
anodic pickling the component in a second pickling medium that is less acidic than the first pickling medium, and
cathodic degreasing the component; and
generating a coating of the component using a nickel electrolyte.