Electroplating Titanium Anode
There are two types of electroplating anodes, soluble anodes and insoluble titanium anodes.
THT insoluble titanium anodes are utilized in various electroplating fields due to their uniform coating, low energy consumption, good stability, lack of contamination to the plating solution, and long lifespan. These fields include:
- Galvanizing steel plates
- Tin plating steel plates
- Trivalent chromium plating
- Chromium plating, copper plating, gold plating, rhodium plating, palladium plating, ruthenium plating, iridium plating, platinum plating
- Production of nickel-coated copper roll plating
Working Principle
THT Electroplating titanium anodes utilize electrolysis to deposit a thin layer of metal or alloy onto the surface of a metal substrate. During electroplating, the metal coating and titanium anode serve as the anode, while the workpiece to be plated acts as the cathode. Metal ions from the coating or solution are reduced to form the plated layer on the surface of the workpiece. Using the metal coating as the anode can lead to the formation of anode mud. Throughout the electroplating process, the insoluble titanium anode functions to transfer electrons and conduct current.
THT titanium anodes can be used for electroplating under neutral, acidic, and alkaline conditions. The electroplating coatings, such as MMO coatings (ruthenium-iridium, iridium-tantalum) or platinum coatings, are selected based on the usage environment and application requirements.
Titanium Anode for Galvanizing Steel Plates
THT DSA titanium anodes with low oxygen evolution potential replace lead anodes with high electrode potential, significantly reducing energy consumption in galvanizing steel plate production lines. The most suitable coatings include iridium oxide and tantalum oxide.
Experimental results demonstrate that in an electrolyte solution consisting of 1 mol/L ZnSO4, 0.7 mol/L Na2SO4, and pH 1.5, under actual operating conditions of 100 A/dm2 and 60°C, the working lifespan of iridium-tantalum oxide-coated titanium anodes exceeds 10,000 hours. THT titanium anodes also exhibit excellent conductivity, with each repair cycle ensuring stable operation for over 4,000 hours. This enables an increase in plating current density, facilitating the production of steel plates with thicker zinc coatings.
Titanium Anode for Copper Plating in PCB
In PCB production, acidic electrolytic copper plating typically employs IrO2-coated titanium anodes or mesh titanium anodes on horizontal plating lines. The process is often carried out using pulse plating, with a design lifespan of 8 months or longer.
For the electrolytic recovery of copper from alkaline etching solutions in PCB production, plate-shaped titanium anodes are commonly used, with standard dimensions of 700x1000mm and a lifespan of 2-3 years. THT titanium anodes exhibit high oxygen evolution potential, low current efficiency, and strong electrocatalytic activity in PCB production processes.
- Electroplated Copper Foil Data sheet
| Substrate | Gr1 Gr2 Titanium |
| Current density | 5-20 A/dm² |
| Temperature | 20 ℃ – 40 ℃ |
| PH | 1-3 |
| Mixing speed | 200-300 rpm |
| Shape | Bow Shape Or Plate Shape |
| Coating | IrO2+TaO2+X |
Titanium Anode Degradation Reasons
- In the electrolyte of steel galvanizing, fluoride ions (F-) can react with calcium ions (Ca2+) and aluminum ions (Al3+), forming respective complexes. Even a few parts per million (PPM) of fluoride ions can damage the titanium substrate.
- Reverse currents, such as sudden power outages, can cause metal deposition in the cracks of the coating on the titanium anode surface, leading to dissolution.
- Mechanical damage, such as wear and tear on steel strips during steel galvanizing, can narrow the gap between the anode and cathode. Breakage and damage to the steel strip can result in the destruction of the titanium anode coating.
- During steel galvanizing, slag collected from the steel strip and rollers can also damage the titanium anode coating. Therefore, filtration is necessary in the electroplating process.
Pls inform composition of the plating solution, pH level, current density, and temperature ，we have special engineer team would provide professional proposals to you.
Yes, we could customize accordingly.
Yes, old titanium anode substrate could be reused.
Please check if the electrolyte is contaminated.
Yes, we have.
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