Platinized titanium and niobium anodes are completely or partially covered with a fee microns of platinum (usually 2.5µm). Where the platinum is consumed after years of use, the underlying titanium or niobium passivates and the bath voltage rises at constant current operation. The base metals are not attacked at the usual operational voltages, in fluoride free chromium baths.
For most applications the platinum wear rate is very low and the corresponding anode life time high. In sulphuric acid chromium baths the platinum consumption is between 1g and 4g platinum per million amp hours. Careful design of the platinized anodes will increase their benefit and maximize their life span.
Platinized titanium anodes provide a cost effective replacement for lead anodes in hard chromium plating. They provide superior quality deposition and consistency resulting in increased productivity and throughput. Cost benefit analysis demonstrates that the higher initial investment in this technology can be recouped within a short period of time.
Benefits of Platinized Titanium Anodes in Hard Chrome Plating Anodes:-
Hard Chrome Plating Anodes: A low consumption rate that conserves precious platinum.
Chrome Plating Anodes: Favorable dimensional stability
Hard Chrome Plating Anodes: Corrosion resistance ensures durability with easy maintainability.
Hard Chrome Plating Anodes: Light weight, as well as favorable current distribution in electroplating.
Hard Chrome Plating Anodes: High resistance to corrosion
Hard Chrome Plating Anodes: Resistance to oxidation
Hard Chrome Plating Anodes: High electrical conductivity
Hard Chrome Plating Anodes: Ability to act as catalyst
Hard Chrome Plating Anodes: High chemical stability
Hard Chrome Plating Anodes: Capability to produce an excellent finish