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Materials 2017, 10(8), 842;

Characterization of the Micro-Abrasive Wear in Coatings of TaC-HfC/Au for Biomedical Implants

School of Engineering, Universidad Militar Nueva Granada, Carrera 11 #101-80, 49300 Bogotá, Colombia
CIC biomaGUNE, Paseo Miramón 182, 20009 Donostia-San Sebastian, Spain
Author to whom correspondence should be addressed.
Received: 26 April 2017 / Revised: 1 June 2017 / Accepted: 21 June 2017 / Published: 25 July 2017
(This article belongs to the Section Structure Analysis and Characterization)
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The object of this work was the deposition of a Ta-Hf-C thin film with a gold interlayer on stainless steel, via the physical vapor deposition (PVD) technique, in order to evaluate the properties of different systems subjected to micro-abrasive wear phenomena generated by alumina particles in Ringer's solution. The surface characterization was performed using a scanning electron microscope (SEM) and atomic force microscope (AFM). The crystallographic phases exhibited for each coating were obtained by X-ray diffraction (XRD). As a consequence of modifying the composition of Ta-Hf there was evidence of an improvement in the micro-abrasive wear resistance and, for each system, the wear constants that confirm the enhancement of the surface were calculated. Likewise, these surfaces can be bioactive, generating an alternative to improve the biological fixation of the implants, therefore, the coatings of TaC-HfC/Au contribute in the development of the new generation of orthopedic implants. View Full-Text
Keywords: micro-abrasion; wear; tantalum carbide; hafnium carbide; gold micro-abrasion; wear; tantalum carbide; hafnium carbide; gold

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Guzmán, P.; Yate, L.; Sandoval, M.; Caballero, J.; Aperador, W. Characterization of the Micro-Abrasive Wear in Coatings of TaC-HfC/Au for Biomedical Implants. Materials 2017, 10, 842.

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