The strongly acidic PLATUNA® PT platinum electrolyte is used to deposit smooth, crack-free platinum coatings up to a layer thickness of 5 μm. The deposited layers are characterized by a...
Pure platinum electrolyte without yellow tint
The strongly acidic PLATUNA® PT platinum electrolyte is used to deposit smooth, crack-free platinum coatings up to a layer thickness of 5 μm. The deposited layers are characterized by a brilliant luster and, in contrast to conventional platinum coatings, do not exhibit a yellow tint.
Furthermore, the electrolyte has a low sulfuric acid content and is therefore less aggressive to the coating substrate. The deposition rate is independent of the current density, which leads to an optimum layer thickness distribution. No precipitation occurs and the platinum concentrate does not have to be stored in the refrigerator.
Electrolytes Characteristics
| Electrolyte type | Strongly acidic |
| Metal content | 2 (1 - 6) g/l |
| pH value | < 1 |
| Operating temperature | 60 (55 - 65) °C |
| Current density range | 5 (0.5 - 10) A/dm² |
| Plating speed | approx. 0.13 μm/min at 5 A/dm² |
| Deposition rate | approx. 5.6 mg/Amin at 5 A/dm² |
Coating Characteristics
| Coating | Platinum |
| Purity | 99.9 wt.% Pt |
| Colour of deposit | White |
| Brightness | Bright, brilliant |
| Hardness | not measurable, approx. 350 HV |
| Max. coating thickness | approx. 0.5 μm bei 2 g/l Pt content, up to 5 μm at 6 g/l Pt content |
| Density of the coating | |
Advantages
- Excellent brilliance without yellow tint
- Up to 5 μm layer thickness
- High abrasion resistance
- Current density independent
- Easy handling - no cold storage and no precipitation
Applications
- Jewelry
- Watches
- Writing implements
- Spectacles frames
- Bathroom fittings
