METHOD AND SYSTEM FOR MARKING OBJECT HAVING SURFACE OF CONDUCTIVE MATERIAL Russian patent published in 2018 - IPC B23H9/06 G06K1/12 G06K19/06 G06K19/08 

FIELD: electrical engineering.

SUBSTANCE: method includes applying an electric spark discharge to a surface, wherein the surface is exposed to a gas and the material is subjected to at least partial melting and/or partial ablation by a spark discharge to form a pattern at object (18). Spark discharge is used in the form of two successive phases, the first of which provides the formation of a conductive channel, and in the second phase a current is introduced into the conductive channel for partial melting and/or partial ablation of the material. Pattern produced on the object includes a random-shaped crater or a random distribution of random-shaped craters and re-deposited droplets of said material. Invention also relates to marking system (10) for marking object (18) with spark generator (12) having counter electrode (14) and connector (16), and to a system for authenticating marked object (18).

EFFECT: invention relates to marking an object having a surface of a conductive material, which enables to obtain a mark that is practically impossible to reproduce, copy, or forge.

29 cl, 16 dwg