CHROMIUM RETENTION LAYERS FOR COMPONENTS OF FUEL CELL SYSTEMS

摘要

The invention relates to a method for producing chromium retention layers for components of high-temperature fuel cells (SOFCs) made of chromium-containing alloys. The aluminum-containing surface of the component is subjected to elevated temperatures such that a gas-tight chromium retention layer is formed. Said layer effectively prevents chromium from evaporating from the basic material. Defects in the layer heal automatically during operation of the fuel cell.