RHODUNA® J1 deposits brilliant white, very light and bright surface finishes. This makes the electrolyte ideal for use in decorative...
Brilliant white rhodium electrolyte for decorative applications
RHODUNA® J1 deposits brilliant white, very light and bright surface finishes. This makes the electrolyte ideal for use in decorative applications, such as jewelry, watches or spectacle frames. Special features are its high deposition rate and excellent throwing power. Furthermore, RHODUNA® J1 deposits layers 0.1 - 0.3 μm thick without cracking.
Rhodium is deposited directly onto silver, gold, copper and copper alloys, nickel and nickel alloys. The electrolyte is suitable for rack and barrel plating.
Electrolytes Characteristics
| Electrolyte type | Strongly acidic |
| Metal content | 2 (1.6 - 2.4) g/l Rh |
| pH value | < 1 |
| Operating temperature | 35 (20 - 40) °C |
| Current density range | 1 A/dm² |
| Plating speed | 0.025 μm/min at 1 A/dm² |
| Anode material | Pt-Ti (type PLATINODE® Pt/Ti) or MMO (Typ PLATINODE® 187) |
Coating Characteristics
| Coating | Rhodium |
| Purity | 99.99 wt.% Rh |
| Colour of deposit | brillant white |
| Brightness | bright |
| Hardness of deposit | approx. 800 - 900 HV |
| Max. coating thickness | approx. 0.3 μm |
Advantages
- Extremely light and bright coatings
- Good deposition rate
- Low porosity
- Excellent throwing power
- Layers 0.1 - 0.3 μm thick without cracking
- Suitable for rack and barrel plating
Applications
- Jewelry
- Watches
- Spectacle frames
- Writing utensils
