ARGUNA® 630 is an alkaline cyanide hard silver electrolyte for (electro) technical applications. The additives increase the wear resistance compared to...
For the Deposition of Silver Layers with High Hardness
ARGUNA® 630 is an alkaline cyanide hard silver electrolyte for (electro) technical applications. The additives increase the wear resistance compared to conventional silver layers significantly: The layers obtain a stable hardness of 120 to 140 HV, even after thermal aging.
In particular, ARGUNA® 630 is, suitable for electromechanical components that are exposed to increased mechanical stress. The higher hardness and reduced wear of the coatings show particular advantages in the case of more severe vibration and temperature stresses on contact surfaces and connectors.
Appropriate contact lubrication makes the coatings suitable for e-mobility applications and increases the reliability and durability of the contact systems.
According to the operating parameters, the electrolyte is suitable for reel-to-reel plating, rack and barrel systems.
Electrolytes Characteristics
| Electrolyte type | Alkaline-cyanide |
| Metal content | 30 (25 - 35) g/l Ag |
| KCN content | 130 (110 - 170) g/l |
| pH value | 12.5 |
| Operating temperature | 25 - 40 °C |
| Current density range: Rack operation | 0.5 - 5 A/dm² |
| Current density range: Barrel operation | 0.5 - 2 A/dm² |
| Current density range: Reel-to-reel plating | 5 - 50 A/dm² |
| Plating speed: Rack operation at 1 A/dm2 | 1 μm in 1.5 min |
| Plating speed: Rack operation at 1 A/dm2 | 1 μm in 0.3 min |
| Plating speed: Reel-to-reel plating at 20 A/dm2 | 13 μm in 1 min |
| Anode material | Fine silver |
Coating Characteristics
| Coating | min. 98 wt.% Ag |
| Colour of deposit | White |
| Brightness | Bright |
| Hardness | approx. 120 - 140 HV (after thermal aging) |
| Density of the coating | 10.5 g/cm³ |
Advantages
- Perfect silver layers for highly stressed electro–mechanical components
- High, stable coating hardness between 120 to 140 HV, even after thermal aging
- Reduced wear, improved vibration and
- Temperature resistance
- Suitable for reel-to-reel, rack and barrel plating
- Good electrical properties, even for high voltage
Applications
- Connectors subject to high stress
- Plug-in chargers for electric vehicles
