RHODUNA® 275 Black Rhodium Electrolyte

Pen rhodium plating for black bright coatings

With RHODUNA® 275 Black, selective rhodium plating is possible with a pen plating unit. Small surface elements of components are rhodium-plated using direct current and by wiping contact with the tip of the pen. The process is mainly used to apply decorative patterns to jewelry. 

RHODUNA® 275 Black deposits bright and anthracite to black coatings. Depending on the voltage, values in the L*a*b* color space of 61.0 / 1.1 / 4.0 (at 10 V) are possible, while providing typical coating thicknesses of around 0.1 μm. RHODUNA® 275 Black is formulated to deliver fast coverage speed and high deposition efficiency.

The electrolyte can also be used for rack operation.

Advantages

• Bright anthracite to black rhodium coatings
• Uniform coating thickness
• Crack-free up to 0.1 μm
• Easy handling
• Fast coverage speed
• High deposition rate

Applications

• Jewelry
• Watches
• Writing implements
• Spectacle frames
• Fittings