Titanium Anode for galvanic deposition
In the field of the galvanic deposition of the metals for industrial or civil use, there are multiple possibilities of use for activated Titanium as anode, in replacement of the soluble anodes
Product Introduction
Activated titanium anodes (MMO or platinized) are widely used in galvanic deposition processes for both industrial and decorative applications. They serve as a high-performance alternative to traditional soluble anodes, offering improved stability, efficiency, and environmental performance.
Key Applications
1. Nickel & Copper Plating
Used as auxiliary anodes in:
Watts nickel baths
Sulfamate nickel baths
Acid copper plating systems
Function:
Stabilizes metal ion concentration
Improves bath consistency and plating quality
2. Precious Metal Plating
Applicable in:
Gold plating
Platinum plating
Rhodium plating
Nickel/Palladium plating
Advantages over platinized titanium:
Lower cost
Comparable electrochemical performance
Long service life
3. Alloy Plating (e.g., Zn/Ni)
Widely used in modern alloy deposition systems
Especially effective in zinc-nickel plating lines
Benefit:
Stable current distribution
Consistent alloy composition
4. Decorative Chromium Plating (Trivalent Cr)
Used in sulfate-based trivalent chromium systems
Key Advantage:
Minimizes formation of hexavalent chromium (Cr⁶⁺)
Improves coating quality and environmental compliance
5. Hard Chrome Plating (Hexavalent Cr)
Applied when complex anode geometry is required
Suitable where lead alloy anodes cannot be used
Note:
Often used together with lead anodes
Lead anodes help re-oxidize unwanted trivalent chromium
Electrogalvanizing (Zinc Plating for Steel Coil)
Process Overview
Used in steel industry for continuous zinc coating of strip/coil in slightly acidic zinc sulfate solutions.
Advantages of Titanium Anodes:
Dimensionally stable (no consumption)
Lightweight and easy to install
No contamination of electrolyte
Lower oxygen evolution overpotential → energy savings
Maintenance-free operation
Technical Challenge:
Very small electrode gap (<1 cm)
Frequent short circuits between strip and anode
Solution:
A reinforced coating system (Ir/Ta/SnO₂):
High resistance to polarity reversal
Protects titanium substrate from corrosion
Prevents coating delamination
Electrotinning (Tin Plating)
Traditional System:
Mainly uses soluble tin anodes
Modern Development:
Transition to insoluble titanium anodes
Tin supplied via separate dissolver system
Electrolytes:
Methanesulfonic acid (MSA)
Phenolsulfonic acid (PSA)
Challenges:
Highly aggressive environment
Faster consumption of Iridium oxide
Formation of passivating lead oxide layers
Technical Advantages of Titanium Anodes
Excellent corrosion resistance in acidic environments
High electrocatalytic activity
Stable dimension (DSA – Dimensionally Stable Anode)
Reduced energy consumption
Long service life
Recoating capability → cost-effective lifecycle
Customization & Services
We provide:
Custom anode design based on client drawings
Full range of coating systems (Ir/Ta, Ru/Ir, Pt, etc.)
Recoating and regeneration of used anodes
Technical support for process optimization
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