RHODUNA® Diamond Bright Rhodium Electrolyte

This combination does not exist.

Brilliant-white and ultra-bright rhodium coatings

RHODUNA® Diamond Bright deposits brilliant-white, ultra-bright coatings of previously unattained lightness and brilliance. It is additionally characterized by high covering speed and excellent throwing power. Furthermore the RHODUNA® Diamond Bright layer thicknesses of up to 5 μm can be deposited crack-free.

Rhodium can be directly deposited on silver, gold, copper and copper alloys, nickel and nickel alloys. The layers are extremly low-porous and therefore very corrosion resistant.

Electrolyte characteristics

Electrolyte type

Strongly acidic

Metal content

2 (1.6 - 3.0) g/l Rh

pH value

< 1

Operating temperature

40 (RT - 65) °C

Current density range

1 - 2 (0.5 - 10) A/dm²

Plating speed

0.08 μm/min at 1 A/dm² 0.10 μm/min at 2 A/dm²

Anode material

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

Coating characteristics

Coating

Rhodium

Purity

99.99 wt. % Rh

Colour of deposit

Brilliant-white

Brightness

Ultra-bright

Hardness

Approx. 800 - 900 HV

Max. coating thickness

Approx. 3 - 5 μm

Density of the coating

Approx. 12.4 g/cm³


Advantages

  • Ultra-bright coatings with previously unattained lightness and brilliance
  • Good covering speed
  • Minor porosity
  • Excellent throwing power
  • Layer thicknesses of up to 5 μm can be deposited
  • For rack and barrel plating
  • High abrasion resistance


Applications

  • Jewellery
  • Watches
  • Spectacle frames
  • Writing implements
  • Technical applications (reed contact)











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.

Xem thêm

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.