Título Features of self-organization in ion modified nanocrystalline plasma vapor deposited AlTiN coatings under severe tribological conditions
Autores Fox-Rabinovich G. , Veldhuis S.C. , Kovalev A.I. , Wainstein D.L. , Gershman I.S. , Korshunov S. , Shuster L.S. , ENDRINO ARMENTEROS, JOSÉ LUIS
Publicación externa Si
Medio JOURNAL OF APPLIED PHYSICS
Alcance Article
Naturaleza Científica
Cuartil JCR 1
Cuartil SJR 1
Impacto JCR 2.17100
Impacto SJR 1.69500
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-35348854387&doi=10.1063%2f1.2785947&partnerID=40&md5=189f3d3812ecef6e4522b23e0b4f3be8
Fecha de publicacion 01/01/2007
ISI 250147700114
Scopus Id 2-s2.0-35348854387
DOI 10.1063/1.2785947
Abstract Features of self-organization in the hard AlTiN plasma vapor deposited (PVD) coatings have been investigated under severe frictional conditions associated with high temperatures and stresses, which are typical for high-speed cutting. Aluminum-rich (around 67 at. %) (Al67 Ti33) N hard PVD coating has been modified by means of the "duplex" post-treatment, including annealing in vacuum at 700 °C with subsequent ion implantation by Ar+. Structure modification of the surface layer has been studied using x-ray photoelectron spectro7scopy, electron energy loss fine structure, and high resolution electron energy loss spectroscopy methods. Micromechanical characteristics of the coating have been studied using the nanoindentation method. Coefficient of friction was measured in relation to temperature. Wear behavior of the coating has been investigated under severe conditions of HSC of 1040 steel. Results show that the enhancement of nonequilibrium processes during friction due to ion implantation of AlTiN coating by Ar+ leads to a dominating formation of protective triboceramics on the surface with sapphire-like structure that critically improves wear performance. Analytical modeling of the mass transfer within initial stage of wear was performed based on the concept of irreversible thermodynamics and self-organization in order to formulate the principles of friction control. © 2007 American Institute of Physics.
Palabras clave Annealing; Coated materials; Electron energy analyzers; Electron energy loss spectroscopy; Micromechanics; Nanoindentation; Plasma enhanced chemical vapor deposition; Thermodynamic properties; X ray p
Miembros de la Universidad Loyola

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