| 摘要 |
An object comprising an electrically conductive body part, e.g. comprising copper or silver, and a layer comprising a refractory metal, preferably tantalum. At least part of the refractory metal layer has been transformed into an electrically conductive ceramic material, preferably a tantalum boride. The refractory metal layer improves the corrosion resistant properties of the object and the ceramic material prevents oxidation of the refractory metal layer, and thereby passivation of the object during conduction of a current. The object is suitable for use as an electrode in corrosive environments. The object is cost effective because passivation can be avoided without applying a layer of precious metal. Also a method of forming the object in which the ceramic material is preferably provided by applying boride in a gaseous or solid phase and heating the object.
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