Title Structural and tribological properties of TiC/C/Ag coatings in vacuum and ambient environments
Authors ENDRINO ARMENTEROS, JOSÉ LUIS, Nainaparampil J.J. , Krzanowski J.E.
External publication Si
Means Mater Res Soc Symp Proc
Scope Conference Paper
Nature Científica
SJR Impact 0.29000
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036450230&partnerID=40&md5=0b7d8e0ee1b03b09655220bdb3c832a6
Publication date 01/01/2002
Scopus Id 2-s2.0-0036450230
Abstract TiC/C/Ag coatings were deposited by magnetron sputtering pulsed laser deposition (MSPLD) combining sputtering from a custom made Ti-Ag (60:40) target with the ablation of carbon. Energy disperse spectroscopy (EDS) was used to determine the elemental composition, and x-ray diffraction (XRD) and cross-sectional scanning electron microscopy (XSEM) to examine the structure of the films. Hardness and reduced modulus measurements were acquired using a nanoindentation technique. The pin-on-disk friction test was used to study the friction behavior of the deposited samples in high vacuum and ambient conditions. Variations in the laser energy and the power of the sputtering gun yielded a set of samples with carbon content that ranged from 15.0 to 95.6 percent. The hardest samples with the highest reduced modulus were those with a moderate carbon content and that were shown to form a titanium carbide phase. Tribological results indicated that there is an optimum composition of a TiC/C/Ag coating (~25 at.% carbon) for which it can be reversible and provide lubrication in both ambient and vacuum.
Keywords Coatings; Composition; Energy dispersive spectroscopy; Indentation; Magnetron sputtering; Pulsed laser deposition; Scanning electron microscopy; Tribology; X ray diffraction analysis; Silver films; Ti
Universidad Loyola members

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