Process for the production of a brazed honeycomb body using sheets of a layer-like configuration

A process for producing a catalyst carrier honeycomb body for an exhaust gas system, which comprises:

• initially forming structured sheet metal layers to obtain passages through which a fluid is able to flow, the structured sheet metal layers comprising a layered material having at least one chromium-containing steel layer and at least one layer containing aluminum;
• subsequently substantially homogenizing the chromium-containing steel and aluminum-containing layers in a heat treatment initially under one of vacuum and a reducing atmosphere, subsequently or simultaneously subjecting the sheet metal layers to a brazing procedure in said atmosphere, and then subjecting the sheet metal layers to an oxidizing atmosphere;
• the brazing procedure comprising at least partially brazing together contact locations between the structured sheet metal layers with a brazing material based on nickel and containing between 0.5 and 8% by weight of boron;
• and
• at least one of stacking and winding the structured sheet metal layers to form passages for conducting a fluid flow.