Vàng Cứng Auruna 5400 Hợp Kim Coban Cho Linh Kiện Điện Tử

    Thương hiệu: UMICORE
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    Đức

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    For Depositing Uniformly Bright Coatings

    AURUNA® 5400 the weakly acidic electrolyte deposits yellow, uniform bright hard gold coatings. The newly balanced brightener system of the electrolyte enables the operation in a very wide current density working range and allows a variable gold content at the same time. Due to the usage of special chemical components, the AURUNA® 5400 is equally suitable for rack and barrel application.

    The deposited coatings are characterized by low porosity and an increased abrasion resistance, compared to coatings deposited in AURUNA® 539. Furthermore contacts coated with AURUNA® 5400 exhibit a low and long-time stable contact resistance and an excellent solderability. As well coatings up to 10 μm can be crack-free depositied in the electrolyte.

    Electrolyte characteristics

    Electrolyte type

    Weakly acidic

    Metal content

    8 (0.5 - 12) g/l Au

    pH value

    4.2 (3.8 - 4.6)

    Operating temperature

    50 (48 - 52) °C

    Current density range

    2.5 (1 - 5) A/dm²

    Plating speed

    0.1 - 1.0 μm/min

    Anode material

    MMO (type PLATINODE® 167 or 177)

    Coating characteristics

    Coating

    Gold-Cobalt

    Alloy composition

    99.7 wt.% Au 0.3 wt.% Co

    Colour of deposit

    Yellow

    Brightness

    Bright

    Hardness of deposit

    150 - 220 HV

    Max. coating thickness

    Crack-free up to 10 μm

    Density of the coating

    Approx. 17 g/cm³

    Classification

    Type I-II, Code C-D (equivalent to IC-IID according to MIL-G-45204C)

    Solderability

    ZCT < 0.2 s


    Advantages

    • Very wide operating current density range
    • For technical and decorative applications
    • High corrosion and abrasion resistance
    • Low, stable contact resistance
    • Classification according to ASTM B 488-01: Type I - II, grade C -D


    Applications

    • Contact pins, contact springs, contact plugs
    • Contact materials
    • Slip rings






    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.