Abstract
Platinum anode in the plating solution is insoluble. Decomposition voltage of the plating solution is 1.5volt approximately. The relation between bath voltage and current density is very regular. The higher the current density is, the higher are the bath concentration and temperature.
When the bath solution contain a considerable amount of chloride, too small amount of Na2HPO4⋅12H2O, or the plating time is long at higher bath voltage, the anode is covered with yellow film and the risistance of electricity is increased.
