Parametric study of the mechanical properties of nanocrystalline TiN/CrN multilayer coatings with a special focus on the effect of coating thickness and substrate roughness
TypeArticles dans des revues avec comité de lecture
In a plot to improve the performance of steel mechanical parts subject to aggressive friction solicitations, three batches of deposits of TiN and CrN layers on steel substrates with two different roughnesses have been obtained using reactive DC magnetron sputtering. The present study was conducted to determine the effect of varying TiN/CrN multilayer coatings thickness (varying modulated period Λ and interlayer thickness), on their mechanical and tribological properties. The morphological and the structural properties were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The nanoindentation measurements displayed improvement in hardness (> 40 GPa) and Young’s modulus (> 600 GPa) for the coating with Λ ≅ 12 nm (TiN Λ/2 ≅ 7.5 nm + CrN Λ/2 ≅ 4.5 nm) thickness and the higher number (300) of interfaces, deposited on the rougher substrate. Its low coating damage under the scratch test, associated with its estimated adhesion work (Wad), indicated a good cohesive/adhesive strength and improved structural and mechanical properties.
Files in this item
Showing items related by title, author, creator and subject.
BENLATRECHE, Yacine; NOUVEAU, Corinne; MARCHAL, Rémy; FERREIRA-MARTIN, Jean-Pierre; AKNOUCHE, Hamid (Elsevier, 2009)Nowadays, medium density fibreboard (MDF) composite wood is more and more used in the furniture industry to replace bulk wood such as oak, beech, etc. Indeed, this material presents good mechanical properties, is easy to ...
AKNOUCHE, Hamid; OUTAHYON, Alex; NOUVEAU, Corinne; MARCHAL, Rémy; ZERIZER, Abdellatif; BUTAUD, Jean-Claude (Elsevier, 2009)This paper uses the cutting forces in a routing process of Aleppo pine wood to estimate the tool wear effect. The aim is to obtain further information about the tool wear effect by monitoring the variation in the cutting ...
BENLATRECHE, Yacine; NOUVEAU, Corinne; AKNOUCHE, Hamid; MARCHAL, Rémy (Lavoisier, 2008)The aim of this study was to check the influence of Al content into CrN films on their properties. CrAlN films were deposited by reactive magnetron sputtering using chromium and aluminum pure targets. The atomic content ...
AKNOUCHE, Hamid; NOUVEAU, Corinne; BENLATRECHE, Yacine; ROUSSELOT, Christophe; PILLOUD, David; ZERIZER, Abdellatif; MARCHAL, Rémy (2010)Des revêtements à base de nitrure de chrome réalisés par pulvérisation triode ont été testés en déroulage et défonçage du bois. L’efficacité des revêtements triode a été montrée en usinage de MDF (Medium Density Fiberboard), ...
Study of the wear behaviour of carbide-tipped tools untreated and CrN-treated in the field of the breaking up of the pine of Alep AKNOUCHE, Hamid; ZERIZER, Abdellatif; NOUVEAU, Corinne; BENLATRECHE, Yacine (Presses Polytechniques et Universitaires Romandes, 2007)This work aims to present an experimental step related to a technique of wood machining in order to evaluate wear for the case of the breaking up of the pine of Alep. In our case the study has been done with one untreated ...