US 12,110,606 B2
Silver electrolyte for depositing dispersion silver layers and contact surfaces with dispersion silver layers
Andreas Stadler, Saaldorf-Surheim (DE); Robert Sottor, Frankfurt (DE); Reinhard Wagner, Seekirchen am Wallersee (AT); Christian Dandl, Fridolfing (DE); and Sebastian Heitmüller, Deggingen (DE)
Assigned to ROSENBERGER HOCHFREQUENZTECHNIK GMBH & CO. KG, Fridolfing (DE); and DR.- ING. MAX SCHLOTTER GMBH & CO. KG, Geislingen/Steige (DE)
Appl. No. 17/251,253
Filed by Rosenberger Hochfrequenztechnik GmbH & Co. KG, Fridolfing (DE); and Dr.-Ing. Max Schlötter GmbH & Co. KG, Geislingen/Steige (DE)
PCT Filed Jun. 26, 2019, PCT No. PCT/DE2019/100596
§ 371(c)(1), (2) Date Dec. 11, 2020,
PCT Pub. No. WO2020/007407, PCT Pub. Date Jan. 9, 2020.
Claims priority of application No. 102018005352.1 (DE), filed on Jul. 5, 2018.
Prior Publication US 2021/0254230 A1, Aug. 19, 2021
Int. Cl. C25D 3/46 (2006.01); C25D 5/12 (2006.01); C25D 5/34 (2006.01); C25D 7/00 (2006.01); C25D 7/06 (2006.01); C25D 15/00 (2006.01); C25D 17/08 (2006.01); H01R 13/03 (2006.01)
CPC C25D 3/46 (2013.01) [C25D 5/12 (2013.01); C25D 5/34 (2013.01); C25D 7/00 (2013.01); C25D 7/0614 (2013.01); C25D 15/00 (2013.01); C25D 17/08 (2013.01); H01R 13/03 (2013.01)] 13 Claims
 
1. A contact surface, wherein an electrochemically deposited dispersion silver layer is arranged on a substrate,
wherein the dispersion silver layer comprises particles of at least one finely dispersed solid component with a mean particle size (d50) of 1 μm-20 μm;
wherein the dispersion silver layer comprises the at least one finely dispersed solid component in a content of 3.3 to 10 wt %, based on the total weight of the dispersion silver layer; and
wherein the silver dispersion layer has a coefficient of friction p at 0.3 N after 100 cycles of less than 1.4 and a fretting life at 1.0 N of more than 7500 cycles;
wherein the at least one finely dispersed solid component is selected from the group consisting of graphite, graphite fluoride, graphite oxide, diamond, Al2O3 coated graphite and mixtures thereof.