Home / Titanium Electrode / Iridium-Tantalum Titanium Anode Product Range · Iridium-Tantalum Titanium Anode

Iridium-Tantalum Titanium Anode

Q: What is the difference between Ir-Ta and Ru-Ir coated titanium anodes?

IrO2-Ta2O5 (Ir-Ta) coatings are preferred for oxygen evolution in acidic electrolytes such as electroplating and electrowinning baths. RuO2-IrO2 (Ru-Ir) coatings suit chlorine evolution in chloride-rich solutions.

IrO₂–Ta₂O₅ coated titanium anodes for stable oxygen evolution in acidic electrolytes, with coating loading and rating confirmed against your engineering data.

Get a Quote Talk to an Engineer

Acidic ElectrolysisElectroplatingElectrowinningCathodic Protection

1–5 µmIr-Ta Coating Thickness

5–10 yrsDesign Life at Rating

100%Coating Batch Verified

24hEngineering Response

Iridium-tantalum coated MMO titanium anodes for acidic electrolysis and plating duty

Selection Boundary

This page covers: IrO₂–Ta₂O₅ coated (iridium-tantalum) titanium anodes for oxygen-evolution duty — electroplating, electrowinning, anodizing, acid etching, water electrolysis and cathodic protection.

This page does not cover: platinum-coated (Pt/Ti) anodes or Ru-Ir (chlorine evolution) MMO anodes. For platinum-coated duty, see Platinum-Coated Titanium Anode. For chlorine evolution in chloride-rich electrolytes, see Ruthenium-Iridium Titanium Anode.

Selection note: coating loading, current density, and service life are interdependent and are confirmed together per quotation — none is guaranteed independently.

Introduction

Iridium-tantalum coated titanium anodes (IrO₂–Ta₂O₅/Ti) combine a titanium substrate with a mixed-metal-oxide coating engineered for oxygen evolution in acidic media. They hold a stable potential under hard anodic duty, which is why they are specified for electroplating, electrowinning, anodizing and acid-etching lines. Actual performance depends on coating loading, current density and electrolyte chemistry, and is confirmed per quotation rather than stated as a universal value.

Ehisen applies the Ir-Ta coating in controlled multi-layers with measured precious-metal loading, and verifies every batch before dispatch. Each anode is engineered to your substrate dimensions, electrical duty, and operating conditions.

Iridium-tantalum coated titanium anodes manufactured by Ehisen for electrolysis and cathodic protection

Product Gallery

Iridium-Tantalum Titanium Anode Formats

Standard formats include plate, mesh, tube, rod and wire. Other shapes and dimensions are produced to drawing.

Iridium-tantalum MMO titanium anode array for oxygen-evolution duty

Ir-Ta anode array

Iridium-tantalum titanium anodes for freshwater cathodic protection

Ir-Ta freshwater CP

Titanium anode mesh substrate for iridium-tantalum coating

Ir-Ta mesh anode

Tubular Ir-Ta anode

Engineering Basis

The four inputs below define every Ir-Ta anode quotation. Provide them and we will confirm coating thickness, current-density rating and service life together.

Engineering Item	Required Definition
Target reaction	Anodic main reaction (OER / CER / other) and competing reactions
Electrolyte	Full composition, acidity, chloride / fluoride, contaminants
Electrical duty	Total current, current-density basis, polarity, peaks
Design-life basis	Failure criterion and expected operating hours

IrO₂–Ta₂O₅: acidic oxygen evolutionCoating verified by XRF thickness measurementSubstrate: ASTM B265 Gr1 / Gr2 titanium

Technical Specifications

Standard parameters are listed below; values marked per order are confirmed against your engineering data.

Parameter	Specification
Substrate	Grade 1 / Grade 2 titanium
Coating	Iridium-Tantalum (IrO₂–Ta₂O₅)
Coating loading	8–20 g/m², custom available
Shape	Plate / mesh / tube / rod / custom
Dimensions	Per drawing (L × W × T)
Current density	Confirmed per order
Operating temp	Confirmed per order
Service life	Confirmed per loading & conditions

Coating Quality

Coating Control & Surface Quality

Coating loading and uniformity are measured, not assumed — the parameters that actually control anode life and current distribution.

Iridium-tantalum MMO coating inspection on a titanium anode sample

Coating Loading & Uniformity

Active coating loading is measured and controlled per batch — the value that sets current-density rating and design life.

Titanium anode life extension testing under electrochemical load

Bonding & Thermal Cycling

Adhesion and thermal cycling are checked during production to keep the coating stable under thermal and electrochemical load.

Order Basis

Share the five requests below and we will return a quotation with coating loading, rating and life confirmed together.

Request	Definition
Electrolyte composition	Full formula, acidity, temperature
Current duty	Total current / current density / polarity
Coating loading target	Thickness or life target
Dimensions	Drawing or dimensions
Connection	Welding / threaded / flange

Minimum order: negotiable per formatDocuments: MTC · coating report · XRF data · inspection record · CoC

More Titanium Anode Products

Titanium Electrode RangeAll MMO and platinized titanium anode formats across our product range. → Ruthenium-Iridium AnodeRuO₂–IrO₂ coated anodes for chlorine evolution in chloride-rich duty. → MMO Titanium AnodeMixed metal oxide coated titanium anodes for general electrolysis and plating duty. → Iridium Oxide Coated AnodesIrO₂ coated titanium anodes for general acidic oxygen-evolution duty. →

FAQ

What is the difference between Ir-Ta and Ru-Ir coated titanium anodes?

IrO₂–Ta₂O₅ (Ir-Ta) coatings are preferred for oxygen evolution in acidic electrolytes such as electroplating and electrowinning baths. RuO₂–IrO₂ (Ru-Ir) coatings suit chlorine evolution in chloride-rich solutions. Tell us your electrolyte and target reaction and we will recommend the right coating.

How long does an iridium-tantalum titanium anode last?

Service life depends on coating loading, current density and operating conditions. A well-selected Ir-Ta anode typically lasts several years in normal acidic duty; the exact life is confirmed per order against your duty cycle.

Can an iridium-tantalum anode be re-coated after its coating wears out?

Yes. The titanium substrate can be stripped and re-coated with fresh Ir-Ta coating, significantly lowering long-term ownership cost.

Get a Quote for Your Application

Send your electrolyte composition, electrical duty and design-life target — we will confirm coating loading, current-density rating and service life together, within 24 hours.