Analysis and Simulation for Properties and Performance of Carbon–Nitrogen–Ceramic Multilayer Coatings

Abstract

A neural-based fuzzy logic system was used to model and characterize adhesive behavior of the carbon-nitrogen-ceramic multilayer coating. The carbon-nitrogen ceramic multilayer coatings were prepared by an unbalanced magnetron (UBM) sputtering. Two kinds of carbon-nitrogen-ceramic multilayer coatings with Zr/ZrC/NC and Zr/ZrC/NZrC were adopted. An orthogonal array for reducing the number of required experiments is introduced. The critical load of the scratches to failure and the adhesive properties of a carbon-nitrogen-ceramic coating deposited on stainless steel substrate were carried out. A fuzzy logic system with neural networks in the UBM sputterings was made. The experimental results show the Zr/ZrC/NC films are found to have higher adhesive force, lower ratio of sp 3 to sp 2 structure and a somewhat lower coefficient of friction and tangential force than Zr/ZrC/NZrC films. A reliable multilayer process significantly improves the characteristics and structural features of carbon-nitrogen-ceramic coatings. Superior adhesive properties of the carbon-nitrogen-ceramic multilayer films in the UBM sputterings could be obtained. Further, the accurate modeling of a fuzzy logic system with neural networks can effectively estimate adhesion of the carbon-nitrogen-ceramic multilayer coatings in the UBM sputtering. It was experimentally confirmed adaptive fuzzy logic system predictors agree with the experiments.

Study of Magnetic Fields of Magnetron Sputtering Affecting CrN Films

“…Chromium nitride (CrN) coatings have been widely used to improve wear and oxidation resistance, thermal stability and lifetime expansion, so they are suitable as hard coatings in many practical applications. Many studies of CrN films in BMS processes have concentrated on their mechanical properties [9][10][11][12][13][14][15][16], but the grain structure, the crystallographic orientation and other properties of these coatings depend very much on the deposition technique and parameters. Hence, the effect of magnetic field on the film structure appears to be significant.…”

The Effects of Magnetic Field on the Deposited Performance of CrN Films by Magnetron Sputtering

“…Chromium nitride (CrN) coatings have been widely used to improve wear and oxidation resistance, thermal stability and lifetime expansion, so they are suitable as hard coatings in many practical applications. Many studies of CrN films in BMS processes have concentrated on their mechanical properties [9][10][11][12][13][14][15][16], but the grain structure, the crystallographic orientation and other properties of these coatings depend very much on the deposition technique and parameters. Hence, the effect of magnetic field on the film structure appears to be significant.…”