MMO-coated titanium anodes for impressed current cathodic protection.YIANTENG manufactures MMO titanium anodes for ICCP systems protecting buried and submerged steel structures. The titanium substrate, coating family, active area and anode geometry are selected around the operating medium, required current output and target design life. |  |
Grade 1 / 2 Titanium substrate | Ir–Ta / Ir–Ru MMO coating systems | Rod / tube / mesh / plate Available anode formats |
Why buried and submerged steel needs cathodic protection | Buried and submerged steel remains exposed to electrochemical corrosion throughout its operating life. Coating holidays, ageing, mechanical damage and difficult geometries leave local areas vulnerable. ICCP supplements the coating by supplying controlled direct current to those exposed areas and maintaining the required protection potential across the asset. |
How impressed current cathodic protection works
The rectifier, MMO anode and protected steel form one electrical circuit through the surrounding soil, backfill or water. Protective current flows from the anode through the electrolyte to exposed steel, shifting the structure into the cathodic condition.
 | Rectifier sets the currentAC is converted to controlled DC. Positive connects to the anode and negative to the steel structure. MMO surface transfers currentThe catalytic coating supports the anodic reaction while titanium carries the active layer. Steel becomes cathodicApplied current suppresses iron dissolution—Fe → Fe²⁺ + 2e⁻—at coating defects. |
Oxygen-evolution serviceSoil, freshwater and low-chloride media. A representative reaction is 2H₂O → O₂ + 4H⁺ + 4e⁻. | Chlorine-evolution serviceSeawater and chloride-rich media. Chlorine evolution may contribute through 2Cl⁻ → Cl₂ + 2e⁻. Final coating selection depends on operating chemistry and current loading. |
Why MMO-coated titanium anodes are used in ICCP
MMO-coated titanium is used because the catalytic coating carries the anodic reaction while titanium provides a lightweight, dimensionally stable support. YIANTENG coordinates Grade 1 or Grade 2 titanium, Ir–Ta or Ir–Ru based coating systems, controlled surface preparation and project-specific geometry around the operating medium, required output and target life.
 |
|
MMO titanium vs consumable anodes
| Design factor | MMO-coated titanium | Consumable anode |
|---|---|---|
| Current delivery | Catalytic surface; very low coating consumption | Anode body is progressively consumed |
| Shape in service | Active geometry remains comparatively stable | Shape and area change with mass loss |
| Life basis | Coating loading, active area, current and medium | Anode mass, utilization and consumption rate |
| System planning | Lightweight forms and flexible distribution | More mass and replacement planning may be required |
Discuss your cathodic-protection project. | Open inquiry form |
Send a message