Abstract
In this article, the electrochemical properties of the dithiocarbamate additives used in the copper bath for autocatalysis are discussed. A biodegradable methanesulphonate bath holds the complexing and reducing agents, xylitol and glyoxylic acid, respectively. Diethanolamine Dithiocarbamate (DEDTC) was employed at a concentration of 1 ppm as a stabilizer to enhance the electroless bath stability at 45 °C and potassium hydroxide as a pH modifier at 13.0 ± 0.25. The bath was successfully stabilized, due to the presence of the inhibitor DEDTC. A 1 ppm concentration of oxalic acid was added to the bath as a buffer and brightener. Oxalic acid was introduced, and interesting modifications have been observed in the electroless deposition bath. Oxalic acid speeded up the bath, which had previously exhibited suppressing effect with DEDTC. The physical and electrochemical features of copper deposits in an environmentally friendly electroless bath were investigated by applying the methods of SEM, cyclic voltammetry, Tafel polarization, and impedance spectroscopy.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
