Abstract
The behavior of thiourea and potassium tetracyanonickel (II) as additives has been studied with a view to obtaining a good surface of gold electrodeposit from a gold pyrophosphate solution. Gold exists in pyrophosphate solution as a gold cyanic complex salt without combining with pyrophosphate. The current-potential curve at gold electrodeposition is not affected by additives. Addition of either thiourea or potassium tetracyanonickel (II) resulted in good surface conditions of gold electrodeposits. Analysis of both surfaces showed no impurities and it considered that it was the difference in the strength of crystal orientation that produced good surface conditions. The co-electrodeposited potassium, however had a deleterious effect or the surface condition of gold electrodeposit.
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
