Platinized Titanium & Niobium Anode Dimensionally Stable Anode

Platinised Titanium Anodes are exclusively used in the Hard Chrome Plating application. Platinised Titanium anodes offer numerous benefits. There are Long life, dimensionally stable and easily fabricated into any shape, Homogeneous and long-lasting active surface, Energy savings with shaped anodes and small anode/cathode distances, Reduced environmental burden and reduced maintenance, Mesh anodes provide excellent throwing and can be used at high current densities, Easier handling and replating, Considerations when converting from Lead to Platinised Titanium anodes:

The service life of platinised titanium depends on both the electrolyte matrix and the applied current density. Therefore, in fluoride containing baths and at current densities >75 A/dm2 platinized niobium is recommended in preference to platinised titanium.

Platinized titanium and niobium anodes are completely or partially covered with a fee microns of platinum (usually 2.5 micron). 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 platinised anodes will increase their benefit and maximise their life span.