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Manufactured by Metakem, sold by Nano Cats GmbH
Rhodium Decor S2
Rhodium Decor S2
Regular price
€1.040,00 EUR
Regular price
Sale price
€1.040,00 EUR
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Rhodium-Decor-S2
High-quality rhodium electrolyte for brilliant white coatings. Suitable for decorative and functional applications, it deposits extremely bright, brilliant white layers. Applicable for rack and barrel plating. This easy-to-use electrolyte is characterized by outstanding throwing power and high plating speed. Crack-free coating thicknesses up to 3.0 μm are achievable.
| Property / Parameter | Value / Description |
|---|---|
| Metal | Rhodium |
| Atomic Number | 45 |
| Atomic Weight | 102.91 |
| Concentrate Content | 2 g Rh per 100 ml |
| Bath Color | red-brown solution |
| Rhodium Content in Electrolyte | 2 g Rh/l |
| pH Value | <1 |
| Operating Temperature | 35 °C (range: 25 – 50 °C) |
| Cathodic Current Density | 1 A/dm² (range: 0.5 – 2.5 A/dm²) |
| Voltage | 2 V (range: 1.8 – 2.2 V) |
| Deposition Rate | 0.08 μm/min at 1 A/dm² |
| Deposition Efficiency | 9.4 mg Rh/Amin at 1 A/dm² and 35 °C |
| Current Efficiency | 32% at 1 A/dm² and 35 °C |
| Anode Material | Platinized titanium or MMO titanium anodes |
| Anode to Cathode Ratio | Minimum 1:1 |
Coating Properties
- Pure rhodium coatings
- Brilliant white color, >90 referenced to DIN 5033
- Hardness: 800 – 900 HV
- Layer density: approx. 12.4 g/cm³
- Maximum layer thickness: 1.5 μm for decorative, up to 3.0 μm for non-decorative uses
Bath Preparation and Maintenance
- Slowly stir 100 ml of Rhodium Decor S2 stock concentrate with 2 g of Rh into 800 ml of deionized water and then fill up to 1 liter with deionized water.
- Operation conditions: Start with 2 g Rh/l and working up to i) 1.6 g Rh/l when adding, and ii) 0.25 g Rh/l during final work-out
- Sulfuric acid concentration 25 g/l after preparation with 2 g Rh/l.
- pH below 1, no routine monitoring needed.
- Suitable stirring to remove hydrogen bubbles necessary.
Usage Recommendations
- Pre-clean surfaces and use nickel underlayer for lead, zinc, tin, aluminum, iron before rhodium plating.
- Carbon treatment for organic contamination recommended if needed without removing additives
- Analytical control of Rh and sulfuric acid content advised.
- Bath can be operated down to 0.4 g Rh/l with declining but acceptable current efficiency and stable coating quality.
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