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Iridium tantalum coated titanium anode
Titanium anodes and titanium electrodes (MMO) are made of a precious metal iridium salt coated on a titanium (valve type metal) substrate and sintered at high temperature. They are widely used in electroplating (copper, gold, nickel, chrome, zinc, etc.) And other hydrometallurgical industries. The preparation and application of titanium anodes and titanium electrodes have been quite mature, and have a history of 40 years. Compared with traditional electrodes, titanium anodes and titanium electrodes have advantages that other electrodes cannot match:
1) Technical characteristics
High working current, high efficiency, and excellent antibacterial corrosion performance; long electrode life; current density can be adjusted randomly, operating current density: less than 10000A / M2, iridium tantalum titanium anode and titanium electrode are oxygen evolution anodes
2) High catalytic activity
As we all know, the platinum-plated electrode is a high peroxygen potential (1.563V, relative to mercury sulphate) electrode, while the MMO anode is a low oxygen evolution overpotential (1.385V relative to mercury sulfite) electrode, which is easier to analyze oxygen. Therefore, during electrolysis, the tank pressure is relatively low, which saves electricity. This phenomenon is particularly noticeable in copper foil post-treatment alkaline copper-plated walls.
3) No pollution
Titanium anodes and titanium electrodes are ceramic oxides of the precious metal iridium. After the titanium substrate is cleaned on the surface by oxalic acid at high temperature, the surface oxides such as titanium oxide and titanium dioxide are completely cleaned. The oxide is a fairly stable oxide, almost insoluble in any acid and base, and the oxide coating is about 20µm. The oxide is firmly bonded and does not fall off. Therefore, the titanium anode and the titanium electrode will not pollute the plating solution in a normal working environment, which is basically the same as the platinum electrode.
4) Value for money
The price of iridium tantalum titanium anode and titanium electrode anode is about 60% of that of platinum-plated electrode. It has better electrochemical stability in alkaline electroplating copper electrolyte, and it has excellent electrolytic activity and durability. From the cost analysis of the titanium anode, titanium electrode and PT electrode of Baoji Zhiming Special Metal Co., Ltd., it is obvious that the iridium tantalum titanium anode and iridium tantalum titanium electrode are economical.
5) Because the application of copper in printed circuits requires the use of pulsed periodic periodic reverse (PPR), the use of platinum-plated titanium insoluble anodes is prohibited. The presence of chlorides in the sulfuric acid electrolyte in this current environment will cause The platinum layer was peeled. However, this phenomenon can be avoided by using size iridium tantalum titanium anode and iridium tantalum titanium electrode.
6) Iridium-titanium-titanium anode and iridium-tantalum-titanium electrode require less maintenance. No need to shut down production to clean and replace anodes, which greatly increases productivity and saves costs;
7) Iridium-titanium-titanium anodes and iridium-tantalum-titanium electrodes have high oxygen evolution potential characteristics, and therefore, they have particularly good corrosion resistance in strong acid systems;
Platinum titanium anode