Application of nanocomposite coatings to protect power equipment from droplet impingement erosion

Self-Healing of PVD-Coatings

“…Since surface engineering emerged as an independent scientific direction, the problems of obtaining and quality of coatings remain one of the most studied areas of it. High-tech methods of applying vacuum ion-plasma coatings show their presence in an increasing variety of industrial applications [1][2][3][4][5][6][7]. A wide range of experimental data obtained in the field of studying the structure and properties of nanocomposite ion-plasma coatings made it possible to generalize and systematize the characteristic features of coatings of various cermet systems [8][9][10][11][12].…”

“…Coatings of this type are highly sensitive to the quality of the substrate surface and to the presence of a droplet phase in a vacuum chamber. This is the reason for the formation of growth defects, porosity, residual stresses and for the reducing of adhesion, mechanical and operational characteristics in coatings [13,14]. Despite the practical solution of these problems by stricter requirements for the quality of the substrate surface and the use of magnetic separation, the question of the defect-freeness of such coatings remains open [15,16].…”

Experimental research results of the aluminum alloy erosion wear at variable parameters of the high droplet impact

“…In view of this, in recent years, quite active attempts have been made to develop and implement active and passive methods of protection against droplet erosion [5][6][7][8][9][10]. These measures should lead to an increase in the service life of such blades before the capital repair of the turbine.…”