Zirconia based article, use of such an article as a wear resistant exterior part for a wristwatch and method for obtaining such an article

摘要

A zirconia based article having a core of ZrO2 and/or partially reduced ZrO2, characterized in that it includes, over at least part of its surface, a superficial layer integral with the article, the thickness of the superficial layer including a plurality of regions of which one external region is formed of zirconium nitride having a gold metallic appearance.