Process for the thermochemical edge layer treatment of austenitic steels comprises inserting impurity atoms into the substrate edge layer, and carrying out edge layer modifications

摘要

Process for the thermochemical edge layer treatment of austenitic steels comprises inserting impurity atoms into the substrate edge layer by contacting the austenitic steel substrate with a molten metal enriched with impurity atoms; and carrying out edge layer modifications. Preferred Features: The edge layer modifications are carried out to improve the surface hardness, and the wear and corrosion resistance. The impurity atoms are made from carbon, nitrogen, oxygen and/or boron. The substrate is partially or completely made from austenitic steel or duplex steel (ferritic-austenitic or martensitic-austnitic).