THEORETICAL STUDY OF THERMODYNAMIC MIXING ENERGY AND STRUC-TURAL CHARACTERISTICS OF NANOCOMPOSITE (TIALSII)N/CRN COATINGS

Abstract

the article presents theoretical and experimental studies of multilayer (TiAlSiY)n/CrN coating on a steel bed sprayed by cathode-arc spraying method. Calculations from the first prin-CIPS show that the deposition of the ti1-xAlxN/CrN nanoscale with a high Alx (x=0.75) content has a strong stabilization effect and contributes to the layering of these phases. The mixing energy of ti1-xAlxN/CrN heterostructures is equal to 0.11 EV/n when x=0.75 and gradually decreases to 0.07 EV/n when x=0.25. Diffraction data results (TiAlSiY)show that the N/CrN coating has a typical cubic NaCl-like structure with an excess structure in the direction of {111}. In the course of the study of chemical bonds, a clear formation of Al-n, Al-Ti-n bonds and the predominant concentration of the element Al, as well as weak si-N and Al-o, ti-O oxide-rich substances were revealed. Implantation of heavy Au ions leads to the formation of nanocomposites and nanocrystals on the surface of the coating, but did not lead to significant structural changes in depth. The amount of nitrogen in the implantation area is reduced by 0.5 times due to losses caused by the scattering of Au ions. The surface (TiAlSiY)n layer in the implanted jawbone shows very faint traces of gold ions, indicating that the ions have completely passed through this layer, stopped in the CRN layer and reached the next layer interface.