Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T02:38:56.508Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural and Tribological Properties of TiC/C/Ag Coatings in Vacuum and Ambient Environments

Published online by Cambridge University Press:  17 March 2011

Jose L. Endrino ,
Jose J. Nainaparampil  and
James E. Krzanowski
Jose L. Endrino
Affiliation:
Mechanical Engineering Department, University of New Hampshire, Durham, NH 03824, U. S. A.
Jose J. Nainaparampil
Affiliation:
Wright Patterson AFB, AFRL/MLBT, Dayton, OH 45433, U. S. A.
James E. Krzanowski
Affiliation:
Mechanical Engineering Department, University of New Hampshire, Durham, NH 03824, U. S. A.
Get access

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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 697: Symposium P – Surface Engineering 2001--Fundamentals and Applications , January 2001 , P8.1
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Jahanmir, S., Abrahamson, E. P. and Suh, N. P., Wear 40, 75–84 (84).Google Scholar
2. Dellacorte, C., Sliney, H. E. and Deadmore, D. L., NASA technical memorandum 100783, (1988).Google Scholar
3. Erdemir, A., Fenske, G. R., Erck, R. A. and Cheng, C. C., Lubrication Engineering 26, 23–30 (30).Google Scholar
4. Voevodin, A. A., Schneider, J. M., Rebholz, C. and Matthews, A., Tribology International 29, 559–570 (570).Google Scholar
5. Endrino, J. L., Nainaparampil, J. J. and Krzanowski, J. E., submitted to Vacuum (2001).Google Scholar
6. Endrino, J. L., Nainaparampil, J. J. and Krzanowski, J. E., submitted to Surface and Coatings Technology (2001).Google Scholar
7. Christy, R. I., “Guidelines and practical applications for lubrication in vacuum”, ed. Belinski, S. E. (Vacuum Mechatonics, American Vacuum Society Series 7) pp. 66–70.Google Scholar
8. Phani, A.R. and Krzanowski, J.E., University of New Hampshire, unpublished research.Google Scholar