Abstract: A housing of an exhaust gas treatment component is formed of a material having the following composition: iron: between 50 and 60 wt. %, nickel: between 16 and 24 wt. %, chromium: between 15 and 18 wt. %, aluminium: between 4 and 8 wt. %, and silicon: between 0.5 and 1.5 wt. %.

Abstract: A sheet metal layer of a layer-like configuration with rolled-on brazing material and a process for producing a honeycomb body by stacking and/or winding sheet metal layers made of a layered material. At least a part of sheet metal layers for honeycomb bodies have a structure forming channels through which a fluid can flow. At least part of the sheet metal layers is formed initially of a layered material with at least one layer of chromium-containing steel and at least one mainly aluminum-containing layer, that are homogenized to a large extent during a subsequent heat treatment. The layered material is provided with at least one additional layer made of brazing material when it is produced by rolling, so that during a subsequent heat treatment at least parts of contact locations between the sheet metal layers are joined by brazing.

Abstract: A zeolite-coatable metallic foil, in particular in the form of a honeycomb body, is formed of a steel containing chromium and/or aluminum and having a surface. An oxide layer covers the surface. A ceramic washcoat on the oxide layer acts as a bonding layer for receiving a zeolite layer.

Abstract: A honeycomb body, in particular a catalyst carrier body, for catalytic conversion of exhaust gases in an exhaust gas system, especially an exhaust gas system of an internal combustion engine, preferably an Otto engine, includes a central channel and adjacent discs defining a multiplicity of curved outer channels bounded by the discs. The outer channels extend outwards from the central channel and have one end opening into the central channel. At least some of the disks have a macrostructure forming a lateral boundary of the outer channels. An apparatus for catalytic conversion of exhaust gases includes a housing having an exhaust inlet opening and an exhaust outlet opening, and the honeycomb body disposed in the housing. An additional microstructure in some or all of the disks can increase the effectiveness of the catalytic conversion.

Abstract: A zeolite-coatable metallic foil, in particular in the form of a honeycomb body, is formed of a steel containing chromium and/or aluminum and having a surface. An oxide layer covers the surface. A ceramic washcoat on the oxide layer acts as a bonding layer for receiving a zeolite layer. A process for producing a metallic foil coated with zeolite, in particular in the form of a honeycomb body, includes oxidizing a steel foil containing chromium and/or aluminum to form a finely grained aluminum oxide layer on a surface. A ceramic washcoat acting as a bonding layer is applied to the oxide layer. A zeolite layer is applied to the ceramic bonding layer.

Abstract: A metal honeycomb body includes sheet metal layers. At least some of the layers have at least one macrostructure forming a multiplicity of channels for conducting a fluid in a flow direction and determining a honeycomb shape. At least some of the layers have microstructures at least in some regions. The microstructures extend at an angle to the flow direction, succeed one another at intervals and intersect one another.