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

Coating characteristics

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

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

Coating characteristics

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

RHODUNA® 471 Black gives jewelry a high-end anthracite to black finish. The level of darkness can be adjusted. The electrolyte is easy to use and the deposits are sure to impress with good color consistency and brightness retention. Thanks to its good corrosion resistance, the electrolyte is ideal for applications where black ruthenium cannot meet abrasion requirements.

The electrolyte produces crack-free surfaces even in thicker layers. On a substrate, it is advisable to pre-coat with either gold or rhodium.

To achieve very dark results and perfect abrasion resistance, it is necessary to post-treat the coated parts with RHODUNA® 471 Black.

Electrolyte characteristics

Coating characteristics

Advantages

• Perfect electrolyte for dark to black decorative layers
• High abrasion resistance
• Layers up to 0.7 μm possible
• Suitable for rack plating

Rhodium creates a brilliant white surface on decorative products. Platinum has enjoyed an incredibly stable price for a number of years, and its name is desirable for all buyer groups. Imagine an alloy that combines the benefits of both precious metals.
A RHODUNA® PT layer is built up of rhodium and platinum one half each, notwithstanding that the high-quality alloy can not be distinguished from that of a pure rhodium electrolyte, even with a trained eye. Due to the high societal significance of platinum, your product also gains in psychological value and its price acceptance increases significantly – conversely, for you as a producer a coating with RHODUNA® PT is more attractively in price than that with a pure rhodium electrolyte. Alternatively, the alloy composition of rhodium and platinum can be variably adjusted. Compositions of 80 % platinum to 20 % rhodium, and vice versa, are possible – and all this with constant layer properties. Therefore you always have the price advantage on your side.

Electrolyte characteristics

Coating characteristics

Advantages

• White and bright rhodium-platinum coatings
• Uniform layer thickness
• Crack-free up to 0,3 μm
• Wide current density range
• Abrasion-resistant
• Less expensive than pure rhodium layers
• Minor porosity and good throwing power
• Good covering speed
• For rack and barrel plating

RHODUNA® PT ONE is unique in our product portfolio in many ways. Like its big brother RHODUNA® PT, the ONE variant is an economical alternative for pure rhodium. However, with the difference that RHODUNA® PT ONE is designed for small scale and the metal content is reduced to one gram per liter. This allows extremely economical rhodium plating starting with the first liter of electrolyte – and with almost constant layer properties. Additional benefits include easy handling thanks to a simple work area and the reduction of the necessary components to an absolute minimum – apart from the initial concentrate, only water is required for electrolyte makeup.

A RHODUNA® PT ONE layer consists of 20% rhodium and 80% platinum. Nevertheless, the high-quality alloy cannot be distinguished from that of a pure rhodium electrolyte, even with a trained eye. Due to the high social value of platinum, your product simultaneously gains psychological value and its price acceptance increases significantly – conversely, for you as a producer, a coating with RHODUNA® PT ONE is far more attractive in terms of price than one with a pure rhodium electrolyte.

Electrolyte characteristics

Coating characteristics

Advantages

• White and bright rhodium-platinum coatings
• Uniform layer thickness
• Crack-free up to 0,3 μm
• Wide current density range
• Abrasion-resistant
• Easy handling
• Less expensive than pure rhodium layers
• Good throwing power and minor porosity
• Good covering speed
• Suitable for rack plating

RHODUNA®-Alloy is the first alloy electrolyte in the world combining the high-quality metals rhodium and ruthenium. The basic materials of the new coating are truly royal: A mixture of rhodium, one of the world‘s most valuable precious metal, and the platinum group metal ruthenium.

Its white colour is absolutely equivalent to that of a pure rhodium layer. The electrolyte has all the quality characteristics of high-grade rhodium coatings and surpasses them in durability and uniformity. Its good throwing power even permits the plating of parts with complex geometries. It can be directly deposited on nickel, palladium, silver and gold.

At the same time, the „White Queen“ is considerably less expensive than pure rhodium layers.

Electrolyte characteristics

Coating characteristics

Advantages

• Very light, white and ultra-bright coatings
• More uniform layer thickness
• Crack-free up to 1 μm
• Wide current density range
• Extremely abrasion-resistant
• Less expensive than pure rhodium layers
• Ideal for parts with complex geometries, e.g. chains
• Suitable for rack and barrel

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.

Electrolyte characteristics

Coating characteristics

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)