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  4. AURUNA® 503 Rose Gold Electrolyte

AURUNA® 503 Rose Gold Electrolyte

    Brand: UMICORE
    Origin:

    Germany
    028 3838 0482

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    Neutral, cadmium-free electrolyte for red layers

    AURUNA® 503 is a neutral, cadmium-free gold-copper electrolyte for the deposition of bright red surfaces. It works without free cyanide.

    AURUNA® 503 is especially suited to decorative but also technical applications, such as sliprings. Special features of this electrolyte are its long lifetime and fast deposition speed. For low-carat gold-saving layers, it also offers good resistance to corrosion and abrasion.

    The gold-copper electrolyte can be used for rack and barrel plating and can achieve layers up to 5 μm in thickness.

     

    Electrolyte characteristics

    Electrolyte type

    neutral

    Metal content

    6 (5 - 7) g/l Au 2.5 (2.0 - 3.0) g/l Cu

    pH value

    7.5 (7.3 - 7.8)

    Operating temperature

    65 (60 - 70) °C

    Current density range

    0.8 (0.6 - 1.2) A/dm²

    Deposition rate

    approx. 0.25 μm/min at 0.8 A/dm²

    Anode material

    Pt-Ti (type PLATINODE® Pt/Ti)

     

    Coating characteristics

    Coating

    Gold Copper

    Purity

    75 wt.% Au 25 wt.% Cu

    Colour of deposit

    rose gold

    Brightness

    bright

    Hardness of deposit

    380 - 400 HV

    Max. coating thickness

    approx. 5 μm

    Density of the coating

    approx. 15 g/cm³

     

    Advantages

    • Gold-saving coating (approx. 18ct)
    • Long lifetime
    • Fast deposition speed
    • Cadmium-free
    • Red gold-copper coatings
    • Resistant to tarnishing and corrosion
    • Maximum layer thickness approx. 5 μm
    • Very hard (380 - 400 HV), abrasion-resistant
    • Suitable for rack and barrel

     

    Applications

    • Accessories
    • Jewelry
    • Watches
    • Bathroom fittings
    • Lighting
    • Spectacle frames
    • Writing utensils
    • Sliprings







    Umicore is a global materials technology and recycling group, with about 10,000 employees and a turnover of € 10.4 billion in 2015. Umicore generates the majority of its revenues and dedicates most of its R&D efforts to clean technologies, such as emission control catalysts, materials for rechargeable batteries and recycling. Umicore’s overriding goal of sustainable value creation is based on an ambition to develop, produce and recycle materials in a way that fulfils its mission: materials for a better life.

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    Umicore is a global materials technology and recycling group, with about 10,000 employees and a turnover of € 10.4 billion in 2015. Umicore generates the majority of its revenues and dedicates most of its R&D efforts to clean technologies, such as emission control catalysts, materials for rechargeable batteries and recycling. Umicore’s overriding goal of sustainable value creation is based on an ambition to develop, produce and recycle materials in a way that fulfils its mission: materials for a better life.