Increase in thermal stability of metallic monolith supports for catalysts by gas-phase calorizing

Gas-phase calorizing processes in vacuum and in an inert gas flow for metallic monoliths made of thin (50-μm strip of ferrite steel of the Kh15Yu5-Kh23Yu5 type) of neutralizers of exhaust gases from transport were studied. The technology of increasing the thermal stability and mechanical strength of the metalloblock was developed. The technology makes it possible to substantially prolong the operating life of the monolith, to exclude the expensive process of high- vacuum soldering of the monolith, and to use a cheaper strip for the preparation of the monolith.