Structure and Properties of Multicomponent Surface Layers on Steel

Abstract

The structure and properties of a multicomponent diffusion layer obtained on steel as a result of joint saturation with boron and other elements (silicon, molybdenum, tungsten) during chemical-thermal treatment (CTT) are investigated in this work. As a result of multicomponent saturation of the steel surface pre-treated by deformation of various intensities (electrolyte plasma, pressing, explosion) a multiphase microstructure of the diffusion layer with higher micromechanical characteristics of the steel surface in comparison with ordinary boron saturation is obtained. As established, the pre-treatment of steel surface at saturation under conditions of a multicomponent CTT accelerates diffusion processes and contributes to the spread of finely dispersed inclusions from refractory boride compounds to a greater depth. This ensures the formation of a multilayer complex coating with unique properties.