SUBSTRATE MADE OF POROUS METAL OR METAL ALLOY, PREPARATION METHOD THEREOF, AND HTE OR SOFC CELLS WITH A METAL SUPPORT COMPRISING THIS SUBSTRATE

摘要

A partly oxidized substrate, obtained by subjecting a substrate made of a porous metal or metal alloy comprising particles of at least one metal or metal alloy bound by sintering, said substrate comprising a first main surface and a second main surface, and said substrate having a porosity gradient from the first main surface to as far as the second main surface; to partial oxidation by an oxidizing gas such as oxygen and/or air. Method for preparing said substrate and high temperature electrolyzer cell (<>) comprising said substrate.