Electrodeposition of Silver‐Lead Alloys for Bearings
Charles L. Faust, Beaumont Thomas · Transactions of The Electrochemical Society · 1939
Electrodeposition offers a means of preparing excellent bearing alloys of silver‐lead containing 3 to 5 per cent lead. The method is not subject to the difficulty of securing a good bond to the back that is present in the current methods of lining bearings by casting. Plating conditions are given for electrodepositing the silver‐lead alloy plates containing 3 to 5 per cent lead from silver cyanide‐tartrate baths in which lead acetate is dissolved. Reproducible results are obtained over relatively long plating times and bath age during which 3.8 per cent Pb + 96.2 per cent Ag alloy anodes gave satisfactory service. Anode and cathode current efficiencies are essentially equal. The plate composition is practically unaffected by relatively wide variations in current density, temperature and stirring, for values near the optimum for each factor.