Method for specifically adjusting the electrical conductivity of conversion coatings
AssigneeChemetall GmbH
InventorsOlaf Dahlenburg, Frank Hollmann, Michael Droege, Thomas Kolberg, Lisa Schmeier
Life of this patent
Estimating the term…
Abstract
Provided herein is a method for specifically adjusting the electrical conductivity of a conversion coating, wherein a metallic surface or a conversion-coated metallic surface is treated with an aqueous composition which comprises at least one kind of metal ions selected from the group consisting of the ions of molybdenum, copper, silver, gold, palladium, tin, and antimony and/or at least one electrically conductive polymer selected from the group consisting of the polymer classes of the polyamines, polyanilines, polyimines, polythiophenes, and polypryrols.
Claims8
A method for specifically adjusting the electrical conductivity of a conversion coating, wherein a metallic surface is first treated with a conversion/passivating solution which comprises 10 to 500 mg/l of Zr in complexed form, calculated as metal, and comprises at least one organosilane and/or at least one hydrolysis product thereof and/or at least one condensation product thereof in a concentration range of 5 to 200 mg/l, calculated as Si, so as to form a corresponding thin-film coating on the metallic surface, and wherein the metallic surface thus coated is treated
- with an aqueous composition as an after-rinse solution which comprises 20 to 225 mg/l of molybdenum and copper ions.
Dependencies are inferred from the claim text.