MMO Coated Titanium Rod Anode for Cathodic Protection
Coating: Mixed Metal Oxide (MMO)
Coating Structure: Dense and highly conductive catalytic layer
Custom made: Rod (Standard), Tube, and Customed
Expected Lifespan: Built to maintain functional integrity throughout extended deployment
Advantage:
High electrocatalytic activity
Strong corrosion resistance
Long service life
Dimensionally stable
MMO Coated Titanium Rod Anode for Cathodic Protection
In cathodic protection systems, the anode serves as the core output component for impressed current, with its conductive stability, corrosion resistance, and service life directly determining the safety of the protected structure and the long-term operation and maintenance costs of the system. Our MMO Coated Titanium Rod Anode for Cathodic Protection at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for the long-term corrosion protection of critical assets such as buried pipelines, storage tanks, marine steel structures, and reinforced concrete. It uses Grade 1 or Grade 2 pure titanium rod as the substrate, with an iridium-tantalum mixed metal oxide catalytic coating on the surface. The coating exhibits a very low consumption rate in environments such as soil, freshwater, seawater, and coke breeze backfill, enabling decades of stable service under continuous energization. Compared to traditional graphite or high-silicon cast iron anodes, titanium rod anodes are lighter, more compact, and easier to install, making them a reliable choice for your cathodic protection projects.
This product is for B2B Industrial Use Only. Operators should follow relevant electrical safety protocols and cathodic protection operation standards.
Technical Specifications
|
Substrate Material |
Grade 1/2 Pure Titanium Rod |
|
Coating Type |
Iridium-Tantalum Mixed Metal Oxide (IrO₂-Ta₂O₅) |
|
Coating Thickness |
5–15 μm (adjusted based on rated current and operating environment) |
|
Coating Loading |
10–150 g/m² (customized for rated current density) |
|
Current Density Range |
50–600 A/m² (typically designed within 100 A/m² for soil and freshwater applications) |
|
Operating Voltage Window |
0.5 V–2.5 V (typical cathodic protection potential range) |
|
Rod Diameter |
Φ6mm–Φ32mm (common), other specifications available upon request |
|
Connection Type |
Titanium conductor bar threaded connection, flanged connection, welded joint; customizable per design drawings |
Why Choose Our Titanium Anodes?
- Very Low Consumption Rate for Decades of Long-Term Protection
At rated current densities, the annual consumption rate of the MMO coating is measured in milligrams. This means even if your cathodic protection system needs to operate continuously for over 20 years, the anode's own material loss is negligible, delivering stable protective current across decades. The iridium-tantalum coating maintains excellent chemical stability in various environments including soil, freshwater, seawater, and coke breeze backfill, meeting the demands of long-term service under different geotechnical conditions. - Lightweight Design for Easy Installation
Compared to high-silicon cast iron anodes of the same dimensions, our titanium rod anodes weigh only one-quarter to one-fifth as much. Whether for vertical installation in deep well anode groundbeds or horizontal laying in shallow buried anode groundbeds, this significantly reduces the difficulty and cost of transportation, lifting, and on-site installation. Titanium rod anodes have no risk of brittle fracture and are less prone to damage from impacts during construction, improving the safety and efficiency of field operations. - Excellent Electrochemical Stability and Corrosion Resistance
In coke breeze backfill, freshwater, seawater, and chloride-containing environments, the MMO coating maintains stable chlorine and oxygen evolution potentials. Even if the power supply experiences transient voltage fluctuations, the coating retains its structural integrity, with strong resistance to passivation or spalling. The protective film formed by self-passivation of the titanium substrate in various environments further enhances the anode's resistance to pitting and crevice corrosion. - Flexible Connection and Assembly Solutions
We can provide custom titanium rod anode strings with titanium conductor bar threaded connections, flanged connections, or welded joints, exactly per your engineering design drawings. The coated active section and bare titanium section of each anode are precisely segmented, ensuring reliable electrical connections during installation and avoiding crevice corrosion risks. Titanium rod anodes can be used individually or in series-parallel combinations, flexibly adapting to the design requirements of cathodic protection systems of different scales.
|
|
|
|
|
|
|
|
|
|
|
|
Real-World Applications
- Buried Pipeline and Pipe Network Cathodic Protection: Used in impressed current cathodic protection systems for long-distance oil and gas pipelines, urban gas networks, and industrial pipelines, covering titanium rod anode assemblies for deep well anode groundbeds and shallow buried anode groundbeds.
- Storage Tank Bottom External Surface Cathodic Protection: Used for the corrosion protection of the external surface of large above-ground storage tank bottoms, with anodes installed in the sand cushion or coke breeze backfill beneath the tank bottom, providing uniform cathodic protection current to the tank bottom plate.
- Marine and Offshore Steel Structure Cathodic Protection: Used for the corrosion protection of steel structures in seawater environments such as steel sheet pile wharves, cross-sea bridge piles, and offshore platforms, with titanium rod anodes pre-assembled into anode strings for suspension or fixing to underwater structures.
- Reinforced Concrete Structure Cathodic Protection: Used for impressed current cathodic protection of reinforcing steel networks in reinforced concrete structures such as bridges, tunnels, coastal buildings, and industrial plants, inhibiting reinforcement corrosion caused by chloride ion ingress.
The ShenAo Advantage
18 Years of Fabricating Excellence
Since 2008, we've specialized in valuable metal coated titanium anodes from our office in Baoji's "China Titanium Valley." Our develop bimetallic hazardous welding innovation and progressed coating forms provide items you can trust.
Customization for Your Correct Needs
Every generation line is diverse. We give custom fitted arrangements coordinating your particular current thickness necessities, electrolyte composition, and operational parameters. Whether you require little bunch testing or full-scale generation amounts, we convey on time.
Cost-Effective Lifecycle Management
When coating exhaustion happens, you do not dispose of the whole anode. Our proficient recoating benefit strips the ancient oxide layer, sandblasts the substrate, and reapplies new MMO coating. This expands resource life and decreases your add up to taken a toll of proprietorship considerably.
Frequently Asked Questions
Q: What are the main advantages of MMO titanium rod anodes compared to high-silicon cast iron anodes?
A: Three main points: first, they are much lighter, making transportation and installation considerably easier; second, the consumption rate is very low, enabling a longer design life; third, there is no risk of brittle fracture, so they are less prone to damage from impacts during construction. The initial procurement cost is somewhat higher, but from a total lifecycle cost perspective, they are typically more economical. Additionally, the high dimensional accuracy of titanium rod anodes facilitates pre-assembly into anode strings, making them suitable for modular installation in deep well groundbeds.
Q: How are the coated section length and rod diameter of titanium rod anodes determined?
A: The coated section length is determined jointly by the total protection current you design and the selected current density. The rod diameter selection should consider both current-carrying capacity and installation space. For example, if a single anode needs to output 5A and the design current density is set at 80 A/m², a coating surface area of approximately 0.063 m² is required. Combined with the selected rod diameter, the coated section length can be back-calculated. You can provide your design parameters to us, and we will assist with the calculation.
Q: What is the function of coke breeze backfill in an anode groundbed?
A: Coke breeze backfill serves three functions: it increases the effective surface area of the anode, reducing the contact resistance between the anode and the soil; it shifts the electrochemical reaction interface from the coating surface to the coke breeze-soil interface, further protecting the anode coating; and it provides a gas venting pathway, allowing gases generated on the anode surface to dissipate freely, preventing gas blockage. During backfilling, it is essential to ensure the coke breeze filler around the anode is uniform and compact, avoiding any voids that could lead to localized high current density.
Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium rod substrate remains stable in the cathodic protection environment. The old coating can be chemically stripped, and once the substrate passes inspection, it can be recoated to restore performance to new-anode levels. We offer a full-service process including incoming inspection of used anodes, coating stripping, substrate treatment, and recoating, helping you reduce the long-term electrode renewal costs of your cathodic protection system.
Contact Us
You need a partner who not only supplies products but also solves your challenges alongside you. Our team is ready to engage with your inquiries and provide a tailored solution. Share your specific needs or key requirements with us today, and let us help you efficiently transform your breakthroughs into commercial value.
Titanium Anode Manufacturer
Email: zh@baojiti.com.cn
WhatsApp: +86-15877696471 (updated)
Products: Titanium Anodes, MMO Titanium Anodes, DSA Coated Titanium Electrodes, Electrolysis Electrodes, Hydrogen Production Electrodes, Wastewater Treatment Titanium Anodes.
