Abstract

Auger electron spectroscopy was used to study the composition of the oxides formed on the surface of iron-based alloys under pulsed laser irradiation. Laser treatment in air leads to the formation of a multilayer and multicomponent oxide film on the alloy surface. The upper layer of the oxide film consists of local areas of FeO and Fe2O3 and superoxides (Cr, W, Mo) of the doping elements, while the base for the deeper layers consists of Fe3O4. The laser treatment of tool steels induces a considerable depth redistribution of the doping elements, which affects the composition and depth of the corresponding oxides in the developed film.

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