METHOD OF LASER-PLASMA NANO-STRUCTURING OF METAL SURFACE Russian patent published in 2014 - IPC B82B3/00 B23K26/34 C23C4/12 

FIELD: process engineering.

SUBSTANCE: invention relates to laser-plasma nano-structuring of metal surfaces. Proposed method comprises the formation of near-surface laser plasma at continuous optical discharge in metal vapour and feed of ions of active chemical elements from self-contained plasma energy source. Laser radiation and laser plasma interact with processed surface to fuse said near-surface ply. Chemical elements from laser plasma are adsorbed by the surface liquid phase to diffuse into fused layer depth. At cooling of fused ply, atoms of chemically active elements act as artificial crystallisation centres. Control over energy and time parameters of laser plasma, laser radiation by chemical composition of laser plasma and parameters of laser-plasma surface processing allow a purposeful fabrication of nanostructures in near-surface ply.

EFFECT: better surface roughness of at least conserved surface quality.

12 cl, 4 dwg