Application and process
Compared with hexavalent chromium plating, trivalent chromium plating is environmentally friendly, which makes the demand for trivalent chromium plating increase year by year. In the process of trivalent chromium plating, it is very important to prevent the oxidation of Cr3+ to Cr6+ and avoid pollution to bath solution. Traditional lead-base alloy anode or graphite anode is not suitable for trivalent chromium plating due to its high oxygen evolution potential. The titanium anode with iridium mixed metal oxide coating has low oxygen evolution potential, which effectively inhibits the oxidation of Cr3+ and ensures the stability of the plating solution.
Moreover, titanium anode characterized by excellent conductivity, uniform current distribution
and excellent electrolyte corrosion resistance is the best conductive electrode for
trivalent chromium plating.
Advantages
Promote the dispersion of metal coating
No or less Cr6+ ions are generated, to avoid the pollution of bath solution
No anode slime is generated, to ensure the cleanness and stability of the plating solution
Low voltage, high current efficiency, energy saving of plating bath
Good corrosion resistance and thermal shock resistance.