Skip to main content Skip to primary navigation

RHODUNA® Diamond Bright Rhodium Electrolyte

RHODUNA® Diamond Bright Rhodium Electrolyte

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)

Downloads

  • Produktblatt-rhoduna-diamond-bright-en-screen-20190416.pdf

Your contact person

Markus Legeler

Markus Legeler

Manager Sales International
T: +49 7171 607 204
F: +49 7171 607 316
Email

Find a representative in your region