Abstract
It has been fulfilled the structure state analysis of the metal surface layers after their electric-spark treatment (EST) and following treatment by surface plastic deformation (SPD). The structure levels and its scales which fall in the region 20−103nm have been determined. By the methods of roentgene-structural analysis and electron microscopy it was established that the linear defect density after EST and after EST+SPD are practically the same. The last one allowed to suggest that the dislocation cooperative motion, rotation processes are a base of plastic deformation mechanism of the metal electric-spark coatings. Some directions of a stable and more homogeneous structure formation of electric-spark coatings with required properties are proposed.