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  4. AURUNA® 570 Gold Silver Electrolyte

AURUNA® 570 Gold Silver Electrolyte

    Brand: UMICORE
    Origin:

    Germany
    028 3838 0482

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    Alkaline-cyanide gold alloy electrolyte – gold-saving

    AURUNA® 570 is an alkaline-cyanide alloy electrolyte for depositing green-yellow gold coatings. The gold-silver alloy has a fineness of approx. 18 carats. The coatings are gold-saving, they are bright even as thick layers. For thin layers, a variant with a low gold content is available (AURUNA® 570 LC).

    The long-term stable AURUNA® 570 electrolyte is easy to operate and suitable for rack and barrel. It is used for decorative applications.

    Electrolyte characteristics

    Electrolyte type

    Alkaline-cyanide

    Metal content

    8 (7.5 - 8.5) g/l Au 3 (2.5 - 3.5) g/l Ag

    pH value

    > 11

    Operating temperature

    35 (30 - 40) °C

    Current density range

    1.0 (0.2 - 1.8) A/dm²

    Plating speed

    Approx. 0.6 μm/min at 1.0 A/dm²

    Anode material

    Stainless steel

    Coating characteristics

    Coating

    Gold-silver

    Alloy composition

    75 wt. % Au 25 wt. % Ag

    Colour of deposit

    Green-yellow

    Brightness

    Bright

    Hardness

    115 HV

    Max. coating thickness

    > 10 μm

    Density of the coating

    Approx. 15.5 g/cm³


    Advantages

    • Gold-saving 18 carat layers
    • Alkaline-cyanide gold alloy electrolyte
    • Free of cadmium
    • For decorative applications
    • Bright even as thick layers
    • Easy bath maintenance
    • The coatings are RoHS compliant
    • Suitable for rack and barrel


    Applications

    • Jewellery
    • Watches
    • Spectacle frames
    • Writing implements
    • Lighting
    • Household articles
    • Cutlery
    • Accessories







    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.