RHODUNA®-Alloy Black 1 Rhodium-Ruthenium-Electrolyte

RHODUNA®-Alloy Black 1 Rhodium-Ruthenium-Electrolyte

Bring the day the elegance of night

Attractive, appealing and elegant. This is as true for the night as well as for precious metals. Surface finishing with RHODUNA®-Alloy Black 1 allows you to transfer this elegance to your products - also at daytime.

The electrolyte deposits a dark precious metal alloy of rhodium and ruthenium with a noble anthracite hue - without color shift. The coatings produced are extremely resistant to abrasion and offer a price advantage of almost 50 percent (August 2019).

RHODUNA®-Alloy Black 1 finally makes your customers‘ desire for dark precious metal surfaces a reality.

Further information

Electrolyte characteristics

Electrolyte type

acidic

Metal content

1.0 (0.8 - 1.2) g/l Rh 1.0 (0.8 - 1.2) g/l Ru

Operating temperature

45 (40 - 50) °C

Current density range

2.0 (0.5 - 5.0) A/dm²

Plating speed

Approx. 0.04 μm/min at 2.0 A/dm²

Coating characteristics

Coating

Rhodium-Ruthenium

Alloy composition

50 % Rh 50 % Ru

Colour of deposit

Anthracite

Brightness

Bright

Hardness

600 - 900 HV

Max. coating thickness

0.5 μm

Density of the coating

Approx. 12.4 g/cm3

Advantages

  • Very dark anthracite with high color constancy
  • Adjustable degree of blackness
  • Gloss-preserving
  • Uniform layer thickness
  • Up to 0.5 μm crack-free
  • Extremely abrasion resistant
  • Large applicable current range
  • Simple bath management
  • Significantly cheaper than pure rhodium layers
  • Base for deep black layers (RHODUNA® 471 Black)

Applications

  • Accessories
  • Jewelry
  • Watches
  • Eyeglasses
  • Fittings
  • Automobile interior
  • Writing implements
  • Contacts

Downloads

  • Produktblatt-rhoduna-alloy-black-1-en.pdf

Your contact person

Markus Legeler

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

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