What Does Platinized Titanium Anode Mean?
A platinized titanium anode is simply a titanium anode coated
with platinum or platinum metal oxides. Platinized titanium anodes act as
inert anodes and are non-consumable and long lasting. These anodes are insoluble in the electrolyte under the
conditions present in electrolysis.
Unlike carbon anodes, platinized
titanium anodes do not corrode during the aluminum reduction process and do
not release CO2, but rather pure oxygen.
Corrosionpedia Explains Platinized Titanium Anode
The change from lead anodes to platinized titanium anodes was encouraged by the introduction of high efficiency fluoride-free baths, which attacked lead anodes more severely than traditional hard chrome plating chemistries. Initially lead rod anodes were replaced with titanium rod anodes that had a copper or aluminum core for high current applications, and over time the additional advantages of platinized titanium anodes were recognized.
Some of the advantages of platinized titanium anodes include:
- Increased throughput with reduced plating times
- Reduction or elimination of secondary processes, such as grinding
- Anode geometry remains constant over time, allowing consistent optimized plating results
- Long operating life
- Low maintenance
- Higher bath life
- Energy savings and light weight
Some applications where these anodes are used:
- Sewage treatment plants
- Electrosynthesis/chlorate and perchlorate production
- Electroplating and cathodic protection