RHODUNA® 471 Black Rhodium Electrolyte

    Thương hiệu: UMICORE
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    Abrasion-resistant and crack-free dark layers

     

    RHODUNA® 471 Black gives jewelry a high-end anthracite to black finish. The level of darkness can be adjusted. The electrolyte is easy to use and the deposits are sure to impress with good color consistency and brightness retention. Thanks to its good corrosion resistance, the electrolyte is ideal for applications where black ruthenium cannot meet abrasion requirements.

    The electrolyte produces crack-free surfaces even in thicker layers. On a substrate, it is advisable to pre-coat with either gold or rhodium.

    To achieve very dark results and perfect abrasion resistance, it is necessary to post-treat the coated parts with RHODUNA® 471 Black.

    Electrolyte characteristics

    Electrolyte type

    acidic

    Metal content

    2 (1.8 - 2.2) g/l Rh

    pH value

    1.7 (1.0 - 2.0)

    Operating temperature

    60 (55 - 65) °C

    Current density range

    0.5 (0.25 - 2) A/dm²

    Plating speed

    0.04 μm/min at 1,0 A/dm²

    Anode material

    Pt-Ti (type PLATINODE® Pt/Ti)

    Coating characteristics

    Coating

    Rhodium

    Colour of deposit

    Grey to anthracit (black)

    Hardness of deposit

    Depending on degress of blackening excellent to sufficient

    Max. coating thickness

    approx. 0.7 μm

     

    Advantages

     

    • Perfect electrolyte for dark to black decorative layers
    • High abrasion resistance
    • Layers up to 0.7 μm possible
    • Suitable for rack plating

     

     

    Applications

     

    • Jewelry
    • Watches
    • Spectacle frames
    • Writing implements
    • 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.