SUBSTRATE MADE OF A POROUS METAL OR METAL ALLOY, ITS METHOD OF PRODUCTION AND HTE OR SOFC CELLS HAVING A SUPPORT METAL COMPRISING THIS SUBSTRATE

摘要

A partly oxidized substrate is disclosed. According to one aspect, the substrate is formed by subjecting a substrate made of a porous metal or metal alloy including particles of at least one metal or metal alloy bound by sintering. The substrate includes a first main surface and a second main surface. The porosity of the substrate gradually changes from the first main surface to the second main surface. The substrate is partially oxidized by an oxidizing gas such as oxygen and/or air. A method for preparing the substrate and high temperature electrolyzer (THE) cell including the substrate are also disclosed.