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Black Ruthenium Electrolyte – Ready-to-Use Black Ruthenium Plating Solution (5.0 g/L Ru)

Product information "Black Ruthenium Electrolyte – Ready-to-Use Black Ruthenium Plating Solution (5.0 g/L Ru)"

Black Ruthenium Electrolyte – Ready-to-Use Black Ruthenium Plating Solution (5.0 g/L Ru)

Professional Black Ruthenium Electrolyte for Elegant Dark Grey to Deep Black Ruthenium Coatings

The Black Ruthenium Electrolyte is a premium, ready-to-use black ruthenium plating solution developed for depositing elegant dark grey to deep black ruthenium coatings. The deposited coatings are characterized by excellent color consistency, gloss retention, outstanding wear resistance, and an exclusive decorative appearance.

Specifically designed for decorative electroplating applications, this electrolyte is ideal for finishing jewelry, watches, eyewear frames, luxury accessories, and premium metal components. Its uniform deposition produces sophisticated anthracite to black finishes with excellent durability and long-lasting color stability.

With a ruthenium content of 5.0 g/L Ru, the electrolyte produces decorative ruthenium coatings with a maximum coating thickness of up to 0.5 µm.

Important: When plating silver, copper, brass, bronze, or other base metals, a gold or palladium intermediate layer is strongly recommended to ensure optimum adhesion, color stability, and long-term coating performance.


Applications

The Black Ruthenium Electrolyte is ideal for:

  • Jewelry

  • Rings

  • Necklaces

  • Pendants

  • Bracelets

  • Earrings

  • Watches and watch components

  • Eyewear frames

  • Luxury accessories

  • Designer products

  • Decorative metal finishing

  • Premium surface finishing

Suitable for:

  • Jewelers

  • Goldsmiths

  • Jewelry manufacturers

  • Watchmakers

  • Eyewear manufacturers

  • Electroplating companies

  • Professional workshops


Product Benefits

  • Ready-to-use black ruthenium plating solution

  • 5.0 g/L ruthenium content

  • Elegant dark grey to deep black finish

  • Excellent color consistency

  • Gloss-retaining coating

  • Outstanding wear and abrasion resistance

  • Uniform metal deposition

  • Premium decorative appearance

  • Ideal for luxury surface finishing

  • Professional electroplating quality


Suitable Base Materials

The electrolyte is suitable for a wide range of metals and properly prepared electroplated surfaces.

Suitable substrates include:

  • Gold

  • White gold

  • Yellow gold

  • Rose gold

  • Palladium

  • Platinum

  • Nickel

  • Stainless steel

Recommended intermediate layer for:

  • Silver

  • Copper

  • Brass

  • Bronze

  • Base metals

For these materials, a gold or palladium strike/intermediate layer is recommended before black ruthenium plating to maximize adhesion, color consistency, and long-term durability.


Technical Specifications

Product Type
Black Ruthenium Electrolyte

Ruthenium Content
5.0 g/L Ru

pH Value
Approx. 1

Electrolyte Density
Approx. 12 g/cm³


Recommended Operating Conditions

ParameterValue
Voltage2.2–3.0 Volts
Bath Temperature65 °C (60–70 °C)
Plating TimeApprox. 2 minutes (2–4 minutes)
Electrode MaterialGraphite or Platinum Electrodes
Anode/Cathode RatioApprox. 1:1
Current Density0.5–3.0 A/dm²
Workpiece AgitationRequired
Deposition RateApprox. 1–3 mg/A·min
Deposition SpeedApprox. 0.02 µm/min at 1.5 A/dm²
Bath FiltrationRecommended for bath volumes above 10 liters

Coating Properties

The deposited black ruthenium coating offers:

  • Elegant dark grey to deep black finish

  • Excellent color consistency

  • Gloss-retaining surface

  • Outstanding wear resistance

  • Excellent handling durability

  • Premium decorative appearance

  • Long service life

  • Uniform coating quality

Deposit Characteristics

  • Hardness: Approx. 800 HV

  • Maximum Coating Thickness: Up to 0.5 µm

  • Density: Approx. 12 g/cm³


Processing Recommendations

For optimum plating performance, all workpieces should be thoroughly cleaned, degreased, rinsed, and activated before electroplating.

For silver and other base metals, a gold or palladium intermediate layer is strongly recommended to prevent discoloration and improve adhesion.

Maintaining the recommended operating conditions ensures consistent coating thickness, uniform color, and premium surface quality. Variations in voltage, bath temperature, or plating time may influence the final color shade and deposit characteristics.


Available Version

  • Ready-to-Use Black Ruthenium Electrolyte – 5.0 g/L Ru


Quality from Betzmann Galvanik

Betzmann Galvanik develops premium precious metal electrolytes for professional electroplating applications in jewelry manufacturing, watchmaking, eyewear production, luxury goods, and industrial surface finishing.

Our black ruthenium plating solutions are manufactured to the highest quality standards, ensuring excellent process stability, reliable plating performance, and elegant dark grey to deep black ruthenium coatings with outstanding durability, color consistency, and premium decorative appeal.

Ghs05-klein
Ghs05-klein

Hazard statements 

H314 Causes severe skin burns and eye damage. 

Precautionary statements

P280 Wear protective gloves/protective clothing/eye protection/face protection. 

P305 IF IN EYES: P351 Rinse cautiously with water for several minutes. 

P338 Remove contact lenses, if present and easy to do. Continue rinsing. 

P313 Get medical advice/attention.

HS Code 38249970

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