RHODIUM ELECTROLYTE
RHODUNA® Diamond Bright deposits brilliant-white, ultra-bright coatings of previously unattained lightness and brilliance. It is additionally characterized by high covering speed and excellent throwing power. Furthermore the RHODUNA® Diamond Bright layer thicknesses of up to 5 μm can be deposited crack-free. Rhodium can be directly deposited on silver, gold, copper and copper alloys, nickel and nickel alloys. The layers are extremly low-porous and therefore very corrosion resistant.
Advantages
• Ultra-bright coatings with previously unattained lightness and brilliance
• Good covering speed
• Minor porosity
• Excellent throwing power
• Layer thicknesses of up to 5 μm can be deposited
• For rack and barrel plating
• High abrasion resistance
Applications
• Jewellery
• Watches
• Spectacle frames
• Writing implements
• Technical applications (reed contact)
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ELECTROLYTE CHARACTERISTICS |
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COATING CHARACTERISTICS |
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Electrolyte type |
Strongly acidic |
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Coating |
Rhodium-Ruthenium |
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Metal content |
2 (1.6 - 3.0) g/l Rh |
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Purity |
50 % Rh |
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pH value |
< 1 |
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Colour of deposit |
Anthracite |
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Operating temperature |
40 (RT - 65) °C |
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Brightness |
Bright |
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Current density range |
1 - 2 (0.5 - 10) A/dm² |
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Hardness of deposit |
0.5 μm |
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Plating speed |
0.08 μm/min at |
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Max. coating thickness |
Approx. 12.4 g/cm³ |
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Anode material |
Pt / Ti |
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Density of the coating |
600 - 900 HV |
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