METHOD FOR TREATING THE SURFACE OF A NON-FERROUS METAL BY FORMING A MICRORELIEF Russian patent published in 2022 - IPC B23K26/364 B82B3/00 

FIELD: working of metal.

SUBSTANCE: invention relates to a method for treating the surface of a non-ferrous metal by forming a microrelief and can be applicable in various sectors of metallurgical science and metal working. The selected surface area with a surface purity Rz of no more than 1 mcm is mechanically treated, and then treated by laser irradiation. Irradiation is executed at the laser wavelength of the used laser source at an energy density in a pulse of 0.1 to 1 J/cm² along a scanning trajectory providing at least a 95% overlap of the laser beam spots. Each treatment area is irradiated with a series of several dozen laser pulses with a duration of 10^-12 to 3·10^-8 s, providing appearance of a regular microrelief on the near-surface layer of copper or an alloy thereof without melting. After a regular microrelief appears on the near-surface layer of copper or an alloy thereof, the laser beam spot is moved along the area, and the laser treatment is repeated.

EFFECT: provided possibility of identifying the grain boundary structure and producing a regular microrelief of the surface of copper or an alloy thereof without noticeable crater formation on the surface, deteriorating the surface quality.

12 cl, 2 dwg