You are here

Rhodium plating

Application of a thin layer of rhodium with the help of an anode-cathode reaction between parts and the blank.

Beskrivning
Illustration of Rhodium plating

The process

The part to be coated acts as a cathode and the surface coating material, usually, a mixture of rhodium and selenium acts as the anode. Both are immersed in a solution which vary in composition depending on the material, the desired process speed, and the final result.

An anode-cathode reaction is created by the voltage applied allowing the rhodium ion to leave the anode and migrate through the liquid to the part where it’s applied as a thin layer on its surface.

In some cases, the cathode is powdered and dispersed in the solution to obtain a more even distribution of particles in the solution.

The result is a silvery smooth surface with increased wear resistance.