RHODUNA® J1 Rhodium Electrolyte

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Brilliant white rhodium electrolyte for decorative applications

RHODUNA® J1 deposits brilliant white, very light and bright surface finishes. This makes the electrolyte ideal for use in decorative applications, such as jewelry, watches or spectacle frames. Special features are its high deposition rate and excellent throwing power. Furthermore, RHODUNA® J1 deposits layers 0.1 - 0.3 μm thick without cracking.

Rhodium is deposited directly onto silver, gold, copper and copper alloys, nickel and nickel alloys. The electrolyte is suitable for rack and barrel plating.

Electrolyte characteristics

Electrolyte type

Strongly acidic

Metal content

2 (1.6 - 2.4) g/l Rh

pH value

< 1

Operating temperature

35 (20 - 40) °C

Current density range

1 A/dm²

Plating speed

0.025 μm/min at 1 A/dm²

Anode material

Pt-Ti (type PLATINODE® Pt/Ti) or MMO (Typ PLATINODE® 187)

Coating characteristics

Coating

Rhodium

Purity

99.99 wt.% Rh

Colour of deposit

brillant white

Brightness

bright

Hardness of deposit

approx. 800 - 900 HV

Max. coating thickness

approx. 0.3 μm


Advantages

  • Extremely light and bright coatings
  • Good deposition rate
  • Low porosity
  • Excellent throwing power
  • Layers 0.1 - 0.3 μm thick without cracking
  • Suitable for rack and barrel plating


Applications

  • Jewelry
  • Watches
  • Spectacle frames
  • Writing utensils







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.