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→Precious Metal Electrolytes
The following precious metal electrolytes are the most important ones:
*Gold electrolytes < br/>For functional and decorative purposes pure gold, hard gold, low-karat
gold, or colored gold coatings are deposited. Depending on the
requirements, acidic, neutral, or cyanide electrolytes based on
on gold sulfite complexes are used.
*Palladium and Platinum electrolytes < br/> Palladium is mostly deposited as a pure metal, for applications in
electrical contacts however also as palladium nickel. For higher value
jewelry allergy protective palladium intermediate layers are used as a
used as a surface layer on jewelry items.
*Ruthenium electrolytes < br/>Ruthenium coatings are mostly used for decorative purposes creating a
fashionable “grey” ruthenium color on the surface. An additional color
variation is created by using “ruthenium-black” deposits which are
mainly used in bi-color decorative articles.
*Rhodium electrolytes < br/>Rhodium deposits are extremely hard (HV 700 – 1000) and wear
resistant. They also excel in light reflection. Both properties are of value
for technical as well as decorative applications. While technical