Influence of substrate structure on the development of stress anisotropy in CrN coatings. (21st November 2008)

• Record Type: Journal Article
• Authors: Gauzzi, F.; Gusmano, G.; Lamastra, F.R.; Montanari, R.; Valente, T.
• Is Part Of: International journal of surface science and engineering. Volume 2:Number 5(2008)
• Page Start: 337
• Page End: 349
• Publication Date: 2008-11-21
• Subjects: cathodic arc PVD -- physical vapour deposition -- stress anisotropy -- CrN coatings -- steel substrates -- XRD -- X-ray diffraction -- texture -- substrate structure -- wear resistance -- corrosion resistance -- multilayer coatings -- chromium nitride -- elastic stress; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Surfaces (Technology) -- Periodicals; Tribology -- Periodicals; 530.417
• Languages: English
• ISSNs: 1749-785X

Abstract

CrN/Cr/CrN coatings were obtained by Cathodic Arc (CA) Physical Vapour Deposition (PVD) evaporation on three steels (AISI H13, AISI 1040, K340). The structure of the steels before and after deposition was examined by X-Ray Diffraction (XRD). The results show the presence of elastic stresses, compressive in the coating, tensile in the substrate. Computer simulations were employed to describe the atomic positions in the layers of steel and CrN forming the interface under different reciprocal orientations. The results indicate that the {100} texture of the substrate minimises stress level and leads to same stress values along any two perpendicular directions.