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The Effects of Substrate Temperature and Bias on the Structural, Mechanical and Tribological Properties of TiC films deposited by Magnetron Assisted Pulsed Laser Deposition

Published online by Cambridge University Press:  17 March 2011

A.R. Phani ,
J.E. Krzanowski  and
J.J. Nainaparampil
A.R. Phani
Affiliation:
Department of Mechanical Engineering, University of New Hampshire, Durham, NH
J.E. Krzanowski
Affiliation:
Department of Mechanical Engineering, University of New Hampshire, Durham, NH
J.J. Nainaparampil
Affiliation:
Systron Inc, Dayton, Ohio
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Abstract

Titanium carbide films have been deposited using a hybrid magnetron sputtering/ pulsed laser deposition technique. One set of films was deposited at substrate temperatures ranging from room temperature to 600oC with no substrate bias, and a second set was deposited at 400°C bias voltages up to -150V. X-ray diffraction, X-ray photoelectron spectroscopy, and electron microscopy were employed for structural and compositional characterization of the films, and nano-indentation hardness testing and pin-on-disc wear tests were used to evaluate the mechanical and tribological properties. All the TiC films deposited without substrate bias were highly crystalline. The films deposited with bias had significantly reduced crystallinity and non-stoichiometric film compositions. The hardness of the TiC films increased with substrate temperature from 8 GPa at room temperature to 18 GPa at 600oC, whereas the biased films had a maximum hardness of 12 GPa. The wear test data showed significantly lower friction and longer wear life for the -150V biased film.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 697: Symposium P – Surface Engineering 2001--Fundamentals and Applications , January 2001 , P9.6
Copyright
Copyright © Materials Research Society 2002

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