Titanium, tantalum, niobium, zirconium and titanium alloy materials.
The auxiliary anode has gone through the development stages of iron and steel anode, graphite anode, high silicon cast iron anode and metal oxide coating anode. with the application of new materials and new technology, the auxiliary anode has improved obviously from current efficiency to service life.
Lead dioxide electrode has the characteristics of low resistivity, stable chemical properties, good corrosion resistance, good electrical conductivity, and can pass large currents, which substantially improves the bonding power of the plating.
Platinum is preferred for the outer surface of the anode because it is highly resistant to corrosion and ensures that current flows through most electrolyte media without causing it to form an insulating layer of its own.