GOLD IRON ELECTROLYTE
AURUNA® 5300 is a hard gold electrolyte free of nickel and cobalt with high plating speed for decorative and technical applications. The weakly acidic electrolyte for depositing yellow, bright hard gold coatings exhibits good corrosion and abrasion resistance. Its contact resistance is low and long-term stable. Metallic contaminants can be easily precipitated. The hard gold electrolyte can be used for rack and barrel operation. It is especially suitable for jewellery since the coatings are free of nickel and cobalt.
Advantages
• Weakly acidic hard gold electrolyte
• Non-allergenic since free of nickel and cobalt
• High plating speed
• Yellow, bright coatings with approx. 0.3 % iron
• For decorative and technical applications
• Low, stable contact resistance
• Good corrosion and abrasion resistance
• The coatings are RoHS compliant
• Suitable for rack and barrel
Applications
• Accessories
• Jewellery
• Writing implements
• Bathroom fittings
• Lighting
• Connectors/contacts
• Printed circuit boards
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Electrolyte type |
Weakly acidic |
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Coating |
Gold-Iron |
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Metal content |
8 (2 - 12) g/l Au |
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Alloy composition |
99.7 wt.% Au |
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pH value |
4.2 (4.0 - 4.5) |
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Colour of deposit |
Yellow |
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Operating temperature |
45 (43 - 47) °C |
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Brightness |
Bright |
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Current density range |
2 - 3 (1 - 4) A/dm² |
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Hardness of deposit |
150 - 170 HV |
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Plating speed |
0.2 - 1.0 μm/min |
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Max. coating thickness |
Crack-free up to |
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Anode material |
Pt-Ti, MMO (type PLATINODE 147) |
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Density of the coating |
Approx. 17.5 g/cm³ |
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