Abstract
The creation of the scientific foundations for the structural engineering of ultrathin nanolayers in multilayer nanocomposites is the basis of modern technologies for the formation of materials with unique functional properties. It is shown that an increase in the negative bias potential (from -70 to -220 V) during the formation of vacuum-arc nanocomposites based on ZrN makes it possible not only to control the preferred orientation of crystallites and substructural characteristics but also changes the conditions for conjugation of crystal lattices in ultrafine (about 8 nm) nanolayers.
Highlights
In order to achieve high functional properties of materials, a new scientific direction “structural engineering of the surface” has become widespread in recent years in materials science [1,2,3]
The value of the negative bias potential was used as a physical and technological parameter that changed during deposition
Since the degree of ionization of metal vapors in a vacuum arc discharge can reach almost 100 %, changing the bias potential is an effective way to influence the energy of the deposited particles
Summary
In order to achieve high functional properties of materials, a new scientific direction “structural engineering of the surface” has become widespread in recent years in materials science [1,2,3] This scientific direction is based on the establishment of a connection between the technological conditions for obtaining materials, their phase-structural state and basic functional properties. As has been shown in a number of studies, gradient and multilayer coatings obtained in this way, consisting of various nitride layers, demonstrate unique mechanical properties, such as high and ultra-high hardness and adhesion strength This is largely determined by the formation of special boundaries between the layers, which fundamentally distinguishes such materials from single-layer coatings [13,14,15,16,17].
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