METHOD AND APPARATUS FOR THE ELECTRO-DEPOSITION OF LEAD ALLOYS

摘要

Apparatus and method for the electro-deposition of a ternary alloy on to a cathode comprises an anolyte containing chamber 14 and a catholyte containing chamber 10 in communication with one another only through the medium of a cation exchange membrane 16. The apparatus is used for depositing a teruary bearing alloy, such as lead-antimony-tin or leadtin-copper on to the bronze substrate of a steel backed bearing member; the bearing member comprising the cathode 12. Use of the method and apparatus prevents undesirable immersion plating of the lead-containing anode 20 by metals from the plating solution which are more noble than lead.