Housing with a passivation layer, catalyst carrier body with a housing and method for producing a catalyst carrier body with such a housing

A method for the production of a catalyst carrier body, which comprises:

• forming a honeycomb body with an axial partial region by at least one of stacking and winding layers of sheet metal being at least partly structured to form channels in the honeycomb body through which an exhaust gas can flow;
• producing a jacket tube having an inner wall surface with sections;
• forming a passivation layer on at least one of the sections of the inner wall surface of the jacket tube, for deliberately preventing a brazed joint between the jacket tube and the honeycomb body by forming an applied ceramic layer at the at least one section of the inner wall surface and applying an adhesive layer to the at least one section before forming the applied ceramic layer;
• supplying at least partial regions of the inner wall surface of the jacket tube with brazing material;
• introducing the honeycomb body into the jacket tube and at least partially surrounding the honeycomb body with the jacket tube;
• and
• forming brazed joints between the jacket tube and the honeycomb body at least in the axial partial region.