Process for the formation of an anticorrosive, oxide layer on maraging steels

摘要

A method is provided for forming an anti-corrosive, oxide layer on steel. The steel surface is subjected to superheated steam for a period of one to several hours. Before subjecting the steel to the superheated steam, a clean steel surface is initially heated to at least 200 DEG C. in a nitrogen, air, or oxygen atmosphere. The treatment with superheated steam takes place during a further heating period in which a temperature between 450 DEG C. and 520 DEG C. is reached and maintained under steam flow through conditions in which the steam flow is turbulent or should have a Reynolds number greater than 900.