Electrolytic solution for electrochemical deposit of palladium or its alloys
AssigneeMetalor Technologies France Sas a French Simplified Joint Stock Company
InventorsJosé Gonzalez, Lionel Chalumeau, Michel Limayrac
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Abstract
An aqueous electrolysis bath of acidic pH for the electrochemical deposition of palladium and its alloys, the bath containing a palladium compound and optionally at least one compound of a secondary metal to be co-deposited in the form of an alloy with the palladium. The bath also contains ethylenediamine as a palladium complexing agent, and an organic brightening agent, 3-(3-pyridyl)acrylic acid, 3-(3-quinolyl)acrylic acid or a salt thereof. The invention is also directed to a process for the electroplating of palladium or a palladium alloy utilizing an electrolysis bath as defined above by using current densities of between 0.5 and 150 A/dm2.
Claims23
An aqueous electrolysis bath of acidic pH for the electrochemical deposition of palladium or palladium with at least one secondary metal to be co-deposited with the palladium in the form of an alloy thereof, said secondary metal being selected from the group consisting of nickel, cobalt, iron, indium, silver and tin, said bath comprising a palladium compound and optionally at least one compound of said secondary metal and further comprising ethylenediamine as a palladium complexing agent and an organic brightening agent, wherein said brightening agent is 3-(3-pyridyl)acrylic acid, 3-(3-quinolyl)acrylic acid or a salt thereof.
Dependencies are inferred from the claim text.