抄録
It was found that silvery-white, smooth electrodeposits were obtained by adding N-(3-Hydroxy-1-buthylidene)-p-sulfanilic acid (HBPSA) to silver methane sulfonate-potassium iodide baths.
The bath composition and operating conditions most conductive to obtaining a smooth surface on the electroplated silver were 0.27mol/L of CH3SO3Ag, 3mol/L of KI, 2.06×10-2mol/L of HBPSA, with a pH of 5, bath temperature of 50°C, and current density of 0.5∼3A/dm2.
Cathode current efficiency was over 95% at current densities between 1 and 3A/dm2, and throwing power was 30% at HBPSA 2.06×10-2mol/L The solderability and contact electric resistance of these silver deposits were approximately Similar to those from cyanide baths
