With RHODUNA® 271, targeted, partial rhodium plating is possible with a pen plating unit. In this process, small surface elements of the article...
Pen rhodium plating for abrasion resistant and bright coatings
With RHODUNA® 271, targeted, partial rhodium plating is possible with a pen plating unit. In this process, small surface elements of the article are rhodium-plated by means of direct current and by wiping contact with the tip of the pad. The process is mainly used to apply decorative patterns to jewelry, eyeglasses, etc.
Although decorative applications typically require layer thicknesses of 0.1 - 0.2 μm, the process also provides bright, pure white layers up to approx. 1 μm. RHODUNA® 271 is characterized by a particularly fast deposition rate and high deposition efficiency.
Electrolytes Characteristics
| Electrolyte type | Strongly acidic |
| Metal content | 2 g/l |
| pH value | < 1 |
| Operating temperature | RT (20 - 40) °C |
| Voltage | 8 - 10 V (max. 12 V) |
| Plating speed | up to 0.2 μm/min |
Coating Characteristics
| Coating | Rhodium |
| Purity | 99.9 wt.% Rh |
| Colour of deposit | White |
| Brightness | Bright, brilliant |
| Hardness | approx. 800 HV |
Advantages
- Abrasion-resistant, bright, brilliant coatings
- Up to 1 μm crack-free
- High coverage speed
- High deposition efficiency
Applications
- Jewelry
- Watches
- Writing utensils
- Spectacle frames
- Fittings
