Abstract
The results of modeling a composite nickel-phosphorus coating obtained by chemical deposition are presented. The state of structural-phase disordering of the coating surface is considered. The analysis of possible structural states in the surface layers of the coating is carried out. A graph of Me atoms volume changes in phosphorus-containing compounds MexPy(Ме – Fe, Cr, Ni) and the maximum stability temperature NixPyis plotted depending on the composition. The idealized images of the projections of tetragonal and trigonal phosphorus-containing phases structures are constructed.
Highlights
The results of modeling a composite nickel-phosphorus coating obtained by chemical deposition are presented
Under tribomechanical action on parts with a nickel-phosphorus coating applied to it, the phase composition in its surface layers can change due to possible mechanochemical reactions, diffusion processes, polymorphic and morphotropic transformations
Since the Ni - P system can form several more phosphorus-containing phases with a relatively low phosphorus content: Ni5P2, Ni12P5, Ni2P, Ni5P4 [4,5,6], the state of the surface layer can be characterized by a state of phase disordering
Summary
The results of modeling a composite nickel-phosphorus coating obtained by chemical deposition are presented. Under tribomechanical action on parts with a nickel-phosphorus coating applied to it, the phase composition in its surface layers can change due to possible mechanochemical reactions, diffusion processes, polymorphic and morphotropic transformations.
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