PROCEDURE FOR APPLICATION OF METAL OXIDE COATINGS ON SURFACE OF UNALLOYED STEEL Russian patent published in 2016 - IPC C23C26/00 B82Y30/00 

FIELD: material science.

SUBSTANCE: invention relates to material science, specifically to laser processing of metal surfaces for reducing corrosion rate and increasing corrosion resistance of surface unalloyed steel. Method of applying of oxide-metal coating on surface of unalloyed steel includes production of nanosize powder, its application onto surface and processing of applied layer by laser radiation. Production of nanosize powder is carried out by milling chromium oxide powder in an activator for 40-45 minutes, then preparing a suspension of nanosize powder of chromium oxide in heptane, and application of powder on surface of unalloyed steel is performed by application of said suspension layer with thickness of 5-250 mcm. Produced surface is treated with laser radiation with pulse generation frequency 40-100 kHz, power 10-30 W and scanning rate of 500-1,200 mm/s.

EFFECT: stable passive state with increased corrosion resistance on surface of unalloyed steel.

1 cl, 1 dwg, 3 tbl, 1 ex