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Open AccessArticle

Micro and Macro-Tribology Behavior of a Hierarchical Architecture of a Multilayer TaN/Ta Hard Coating

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Departamento de Ingeniería Mecánica Eléctrica, CUCEI, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Olímpica, Guadalajara, Jalisco C.P. 44430, Mexico
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SKF Research and Technology Development, Meidoornkade 14, 3992 AE Houten, The Netherlands
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CONACYT-Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla Pue. 72570, Mexico
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Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Olímpica, Guadalajara, Jalisco C.P. 44430, Mexico
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Cátedra CONACyt, Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, Blvd. Marcelino García, Barragán 1421, Olímpica, Guadalajara, Jalisco C.P. 44430, Mexico
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Author to whom correspondence should be addressed.
Coatings 2020, 10(3), 263; https://doi.org/10.3390/coatings10030263
Received: 10 February 2020 / Revised: 3 March 2020 / Accepted: 9 March 2020 / Published: 11 March 2020
(This article belongs to the Special Issue Tribological Coatings: Nanomaterials for Macroscale)
The micro- and macro-tribological behaviors of a novel hierarchical TaN/Ta coating deposited on Ti6Al4V biomedical alloy by direct current magnetron sputtering were analyzed in the present work. This analysis was associated with the morphological, structural, and mechanical properties, as well as the roughness changes during and after the tribological tests. The wear track of the coating after the macro-tribology tests was evaluated by Raman spectroscopy in order to detect the compounds formed as a result of the tribo-reactions that occurred during the tests. Micro- and macro-tribology behaviors showed a significant wear rate reduction of the hierarchical coating in comparison to the Ti6Al4V substrate. For the case of the micro-tribology tests, this reduction was attributed to the high hardness of the coating (31.4 GPa); however, this hardness caused a considerable increment in the friction coefficient. On the other hand, the macro-tribology performance was associated with the hardness and the ability of the hierarchical architecture to prevent the propagation of cracks. Moreover, the friction coefficient increased considerably at the end of the test; this increment was associated with the tantalum oxides in the wear track detected by Raman spectroscopy. View Full-Text
Keywords: micro-tribology; macro-tribology; hierarchical architecture; hard coating; Raman spectroscopy micro-tribology; macro-tribology; hierarchical architecture; hard coating; Raman spectroscopy
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MDPI and ACS Style

Rivera-Tello, C.D.; Broitman, E.; Flores-Ruiz, F.J.; Perez-Alvarez, J.; Flores-Jiménez, M.; Jiménez, O.; Flores, M. Micro and Macro-Tribology Behavior of a Hierarchical Architecture of a Multilayer TaN/Ta Hard Coating. Coatings 2020, 10, 263.

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