How E-Coat 101 works | De Nora - Electrode and Water ...
Usually, this inert material is from the platinum-group of metals or the oxides of these metals. For e-coating anodes, ruthenium oxide is the most common choice. But a solid sheet of ruthenium oxide would be too expensive to justify its use, so only a thin coating of ruthenium oxide is applied to the surface of a titanium substrate.