Reaction
Target chlorine evolution, process product, competing reactions and current-efficiency basis.
Ru-Ir MMO Anode Manufacturer · Chlorine-Evolution Duty
Ru-Ir MMO Titanium Anodes for Chlorine Evolution
Custom coated titanium mesh, plate, tubular, rod and assembly configurations reviewed against the target reaction, complete chloride chemistry, electrical loading, effective coated area, cell geometry, connection and design-life basis.
Selection boundary: chloride presence and the words “Ru-Ir coated” do not complete the specification. Confirm the dominant anodic reaction, process chemistry, current-density denominator and active-zone drawing before comparing offers.
Best Fit
Chlorine Evolution in Defined Chloride Media
Ru-Ir mixed-oxide coatings are commonly reviewed where chlorine evolution is the intended anodic reaction. Final formulation and loading remain dependent on the complete process window and qualification basis.
Chemistry
Chloride and full composition, impurities, pH, conductivity, temperature and cleaning media.
Electrical Duty
Total current, voltage, current-density denominator, duty, peaks, ramping and polarity.
Cell & Life Basis
Active area, gap, flow, connection, schedule, life method, end point and operating records.
Coating Direction
Review IrO₂ / Ir-Ta OER Anodes →
Ru-Ir vs Ir-Ta / Iridium Oxide
Start with the dominant anodic reaction. Do not route a project from the word “iridium” alone because both coating families may contain iridium while serving different electrochemical duties.
| Decision factor | Ru-Ir starting direction | Ir-based / Ir-Ta starting direction |
|---|---|---|
| Primary reaction | Chlorine evolution | Oxygen evolution |
| Chemistry focus | Defined chloride-containing electrolyte | Defined OER-oriented electrolyte, often acidic or sulfate-containing |
| Shared controls | Full chemistry, contaminants, temperature, active area, current basis, duty, geometry, connection and validation | |
Coating & Specification
Coating, Substrate and Order-Defined Limits
The order should define characteristics and evidence, not copy an unconditioned “typical value.” Ru:Ir ratio, loading, thickness, current density, temperature and life are not universal across processes.
| Characteristic | RFQ / PO definition | Evidence when ordered |
|---|---|---|
| Titanium substrate | Grade/UNS, form standard, condition, geometry, tolerances and lot identity | MTC and traceability |
| Mixed-oxide coating | CER performance/composition basis, metric, units, active area and controlled zones | Batch/process record and agreed test |
| Electrical duty | Current, voltage, density denominator, duty, peaks, polarity and cell distribution | Project-specific electrical/electrochemical evidence |
| Geometry & connection | Dimensions, coated/masked zones, welds, tabs/cable/feed, seal and mounting | Drawing and inspection report |
| Design life | Chemistry, temperature, loading, duty, cleaning, end point, method and exclusions | Calculation, qualification or agreed ALT report |
Forms & Geometry
Mesh, Plate, Tube, Rod and Custom Assemblies
Geometry is selected together with electrolyte access, gas release, cell gap, current distribution, active-area basis, support and electrical connection.
Ru-Ir Coated Titanium Mesh
Open geometry for distributed coated area and electrolyte access. Define mesh, projected/geometric area basis, coated sides, frame and feed.
Ru-Ir Coated Titanium Plate
Flat or formed surfaces with controlled thickness, active faces, masking, tabs, mounting and electrode spacing.
Tubular & Rod-Type Anodes
Cylindrical designs defined by OD/diameter, wall where applicable, active length, end treatment and electrical interface.
Frames & Custom Assemblies
Drawing-based structures with defined welds, active zones, bus/contact areas, supports, seals and replaceable interfaces.
Overall size is not active coated area
Show coated faces, mesh area calculation, uncoated contact zones, edge transitions and inactive mounting regions before current density and quotation are compared.
Chlorine-Evolution Applications
Applications Defined by Chemistry and Duty
Each application name is only a starting point. Final selection requires the actual chloride process, electrical load, cell geometry and required product output.
Electrochlorination & Hypochlorite
Define feed chemistry, chloride, impurities, required chlorine or hypochlorite output, pH, temperature, flow, current basis, cell gap and cleaning.
Brine & Chloride Electrolysis
Confirm full brine composition, competing reactions, target product, concentration range, current efficiency basis, temperature and operating schedule.
Seawater Chlorination
Provide seawater analysis, seasonal range, flow, required output, electrode layout, scaling control, current duty and inspection/maintenance plan.
OEM & Replacement Anodes
Supply drawing, active-area map, connection, cell layout, operating history and process data; do not copy outside dimensions without reviewing the duty.
Application Limits
Failure Risks Must Be Compared with the Original Design Basis
A voltage rise or output loss does not identify coating failure by itself. Review chemistry, electrical loading, active area, deposits, cell gap and connection evidence before assigning cause.
Chemistry drift
Chloride, pH, impurities, additives, temperature and competing reactions changed.
Local electrical overload
Effective area was reduced or current distribution, gap or flow became uneven.
Contaminants and deposits
Scale, solids or aggressive species altered the surface environment or exposed substrate risk.
Connection and polarity
Loose/hot joints, seal ingress, voltage drop, short circuit or reverse polarity occurred.
Verification
Loading, Composition, Electrochemical and ALT Evidence
For every reported value, define what is measured, the method, calibration, sample location, units, sampling, acceptance and relationship to the delivered lot.
Material
Titanium grade, product form, dimensions and heat/lot identity.
Coating
Batch record, active-zone inspection and agreed composition/loading/thickness method.
Assembly
Dimensions, welds, feed/contact, seal, continuity or connection resistance when required.
Performance
Test cell, reference basis, chemistry, temperature, current duty, sample and end point.
XRF boundary
XRF may support surface elemental-composition checks under a calibrated method. It does not automatically prove total loading, thickness, adhesion, uniformity or life.
ALT boundary
Report electrolyte, temperature, current-density denominator, sample geometry, duty and end point. Accelerated results are not a direct field-life guarantee.
Conditional Recoating
Can the Existing Titanium Substrate Be Reused?
Recoating is an inspection decision, not an automatic cost-saving promise. The used substrate must remain dimensionally, mechanically and electrically suitable after old-coating removal and preparation.
- ✓ Remaining thickness, distortion, pitting, cracks and weld condition
- ✓ Connection, threads, seals and contact areas
- ✓ Contamination, prior cleaning and stripping feasibility
- ✓ Drawing compliance and updated duty
- ✓ Requalification, identification and acceptance plan
Process Review
From Approved Design Basis to Lot Release
The applicable route and evidence are confirmed against the approved drawing, coating requirement and inspection plan.
1. Substrate & Traceability
Confirm titanium product-form basis, heat/lot identity, dimensions and drawing before coating preparation.
2. Surface Preparation
Control cleaning, activation, handling and the transition from prepared surface to coating.
3. Coating & Thermal Route
Apply the order-defined mixed-oxide system to the approved active-zone map with batch/process records.
4. Inspection & Release
Verify agreed geometry, active zones, connection and project-specific coating/electrical evidence.
Inside HELE Titanium
Ru-Ir MMO Anode Manufacturing & Quality Control
A concise view of HELE Titanium’s substrate preparation, coating, inspection and production environment.
Before Requesting a Quote
Define the Chlorine-Evolution Duty Before Requesting a Quote
Ru-Ir coated titanium is normally reviewed for chlorine-evolution service, but the useful specification begins with electrolyte chemistry and competing reactions. HELE uses those inputs to review the coating direction, active area, titanium form and production evidence.
What HELE reviews before manufacture
- State the intended anodic reaction, chloride concentration and target operating window.
- Provide temperature, pH, contaminants, current density and duty cycle.
- Define titanium form, dimensions, active area, masking and electrical connection.
- Specify how coating loading or other production controls will be reported.
- Agree dimensional, electrical, visual and electrochemical acceptance records where applicable.
What the product specification cannot replace
- A Ru-Ir coating name or XRF spectrum alone does not prove loading, activity or service life.
- Life projections require a stated operating basis; accelerated tests are comparative unless correlation is agreed.
- Reuse or recoating decisions require inspection and requalification of the returned substrate.
Related anode options
Compare the adjacent product families only after the reaction, environment and supply boundary are clear.
FAQ
Ru-Ir MMO Titanium Anode FAQs
When is a Ru-Ir MMO coating a relevant starting point?
Ru-Ir mixed-oxide coatings are commonly reviewed when chlorine evolution is the intended anodic reaction in a defined chloride-containing electrolyte. Final selection still requires the complete chemistry, impurities, pH, temperature, flow, current-duty basis and operating schedule.
Does chloride in the electrolyte automatically mean Ru-Ir?
No. Chloride presence alone does not establish the dominant anodic reaction or the final coating. Competing oxygen evolution, acidity, contaminants, target product and operating conditions must be reviewed.
How should current density be stated?
State total current and current density together with the exact denominator: exposed geometric coated area, one-side or two-side area, mesh projected area or another agreed basis. Show coated and masked zones on the drawing.
Can XRF prove coating loading or thickness?
Only when the measurement, calibration and relationship to the required metric have been validated. XRF commonly supports surface elemental-composition assessment; loading, thickness, adhesion, uniformity and life need separate definitions and evidence.
Can an old Ru-Ir anode always be recoated?
No. Recoating requires inspection of remaining substrate thickness, deformation, pitting, cracks, welds, connection, contamination and dimensional suitability, followed by an agreed stripping, preparation and requalification route.
Is DSA a generic HELE product name?
No. DSA® is a registered trademark of De Nora. HELE uses Ru-Ir MMO anode and mixed metal oxide coated titanium anode as the primary product terms.
Ru-Ir Requirement Review
Send the Chloride-Process Data You Already Have
A drawing, process note or existing-anode record is enough to begin. Unknown items can remain open for review rather than being replaced by generic loading, current-density or life claims.
- ✓ CER and chloride-chemistry review
- ✓ Coating, active area and geometry checklist
- ✓ Electrical connection and life-basis review
- ✓ Testing, documents and delivery boundary
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sales@heletitanium.com