Sustainable palladium substitute with significant price advantages
The ruthenium electrolytes RUTHUNA® 491, 492 and 493 are neutral electrolytes from which decorative gray ruthenium coatings can be deposited. The electrolytes are easy to operate, and the deposits have a high color constancy and retain their brightness.
RUTHUNA® is used both as a final layer for decorative applications, e.g. on buttons, zippers and accessories in the apparel industry, and as a corrosion-resistant intermediate layer, e.g. to replace palladium. But functional properties, such as reduced sparking in current-conducting applications, also speak in favor of using RUTHUNA®. For example, the process is recommended for the following technical applications: Reed switches, injet printer foils, surfaces of catalytic converters, electrolytic electrodes.
In contrast to strongly acidic electrolytes, where pre-gold plating, or pre-coating with palladium or palladium-nickel is mandatory, materials such as copper, nickel, brass or bronze alloys can be used as undercoats under the ruthenium layer. Of course, palladium, palladium alloy and gold layers can also serve as base materials.
Advantages
Easy electrolyte maintenance
High color consistency
Brightness-preserving
As corrosion-resistant intermediate layers as a substitute for palladium
Copper, nickel, brass or bronze alloys can be used as undercoats
Applications
Zippers
Buttons
Jewelry
Reed switches
Injet printer foils
Catalyst surfaces
Electrolysis electrodes
