Effect of rare-earth metals on the properties of chromized coatings deposited underconditions of self-propagating high-temperature synthesis

Abstract

The use of self-propagating high-temperature synthesis (SHS) to create chromized coatings is based on exothermic powder mixtures. The SHS process is a very intense exothermic interaction of chemical elements in the condensed phase that is capable of self-propagation in the form of a combustion, wave. The SHS method strengthens materials both in a combustion regime and in a regime of thermal self-ignition. The present work is devoted to the possibility of depositing chromized coatings on steels with additives of yttrium chloride, lanthanum chloride, and yttrium and lanthanum oxides. The microstructure, the phase and chemical compositions, and the scale resistance of the coatings obtained are determined.