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  3. AURUNA® 502 Rose Gold Electrolyte

AURUNA® 502 Rose Gold Electrolyte

    Brand: UMICORE
    Origin:

    Germany
    028 3838 0482

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    Neutral, cadmium-free electrolyte for red layers

    AURUNA® 502 is a neutral, cadmium-free gold copper electrolyte working without free cyanide. The red surfaces are bright, very hard and abrasion-resistant.

    AURUNA® 502 is mainly used for decorative coatings, but it is suitable for technical applications such as slip rings as well. As gold-saving, low-carat layers, the surface exhibits very good corrosion and tarnish resistance.

    The gold copper electrolyte can be used for rack and barrel plating, it can deposit layers of up to max. 10 μm in thickness.

     

    Advantages

    • Gold-saving coatings (approx. 18 ct)
    • Cadmium-free
    • Red gold-copper layers
    • Resistant to tarnishing and corrosion
    • Maximum layer thickness approx. 10 μm
    • High hardness (380 - 400 HV), abrasion-resistant
    • Suitable for rack and barrel

     

    Applications

    • Accessories
    • Jewellery
    • Watches
    • Bathroom fittings
    • Lighting
    • Spectacle frames
    • Writing implements
    • Slip rings

    Electrolyte characteristics

    Electrolyte type

    Neutral

    Metal content

    4 (3.5 - 4.5) g/l Au 3 (2.5 - 3.5) g/l Cu

    pH value

    7.5 (7.2 - 8.0)

    Operating temperature

    57 (55 - 60) °C

    Current density range

    0.5 (0.3 - 0.8) A/dm²

    Plating speed

    Approx. 0.15 μm/min at 0.5 A/dm²

    Anode material

    Pt-Ti (type PLATINODE® Pt/Ti)

    Coating characteristics

    Coating

    Gold-copper

    Alloy composition

    75 wt.% Au 25 wt.% Cu

    Colour of deposit

    Red

    Brightness

    Bright

    Hardness

    380 - 400 HV

    Max. coating thickness

    Approx. 10 μm

    Density of the coating

    Approx. 15 g/cm³








    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.