Effect of O2 increase on properties of vanadium oxide coatings
TypeArticles dans des revues avec comité de lecture
The present research was carried out with the aim of studying the influence of oxygen concentration during processing on the properties of the VOx coatings deposited by cathodic magnetron sputtering on a stainless steel AISI 316L substrate. Mechanical and tribological properties were measured by nanoindentation and sliding wear tests respectively. Adhesion was evaluated by means of the scratch test. In order to determine the texture of the coatings, complementary characterization methods including X-ray diffraction in grazing incidence and Bragg Brentano configurations, as well as V scans, were performed. It was found that the texture of the crystalline coatings is strongly influenced by the amount of partial pressure of oxygen in the reactor atmosphere. The V2O5 phase, with an orthorhombic symmetry, was produced in the coating, which had a pronounced texturing for the (001) plane, exhibiting the best values of hardness and Young modulus. It was shown that, as the oxygen concentration drops to ,1 sccm, the mechanical and tribological characteristics, as well as the coating adhesion, tend to decrease considerably.
Files in this item
Showing items related by title, author, creator and subject.
STAIA, M.H.; PUCHI CABRERA, E.S.; IOST, Alain; ZAIRI, Amel; BELAYER, S.; VAN GORP, Adrien (ELSEVIER, 2015)Considerable improvement in the tribological response was achieved during sliding wear tests against alumina ball, when AA 2024-T3-aluminium alloy substrate was coated with DLC/NiP duplex coating. Quantitative EPMA analysis ...
STAIA, Mariana; TROCELIS, A; ZAIRI, Amel; SUAREZ, M; PUCHI-CABRERA, Eli-Saul; IOST, alain; MONTAGNE, alex (2016)The present work has been conducted in order to assess the mechanical and tribological performance of a ZrN coating deposited onto a H13 steel substrate by means of a closed field unbalanced magnetron-sputtering ion-plating ...
ZAIRI, Amel; NOUVEAU, Corinne; LARBI, Ahmed Beb Cheikh; IOST, Alain; MARTIN, Nicolas; BESNARD, Aurélien (Maney Publishing, 2014)CrSiN films were deposited by reactive radio frequency magnetron sputtering in an Ar+N2 gas mixture. The nitrogen gas was injected in the deposition chamber using two methods: the classical constant injection and pulsed ...
CHICOT, D.; PUCHI-CABRERA, E.S.; IOST, Alain; STAIA, M.H; DECOOPMAN, Xavier; ROUDET, F.; LOUIS, G. (Maney, 2013)For describing the indentation size effect (ISE), numerous models, which relate the load or hardness to the indent dimensions, have been proposed. Unfortunately, it is still difficult to associate the different parameters ...
PUCHI-CABRERA, E.S.; STAIA, M.H.; IOST, Alain (ELSEVIER, 2015)The change in the composite hardness with penetration depth derived from nanoindentation tests conducted on coated systems, which involve the deposition of multilayer coatings, in general exhibits a complex shape, as a ...