Abstract
Nanocrystalline TiC/amorphous carbon (a-C) composite films were synthesized at near room temperature with a hybrid process combining laser ablation of graphite and magnetron sputtering of titanium. Film microstructure was investigated by x-ray photoelectron spectroscopy, x-ray diffraction analyses, and transmission electron microscopy. Mechanical properties were evaluated from nanoindentation, scratch, and friction tests. The films consisted of 10 nm sized TiC crystallites encapsulated in a sp3 bonded a-C matrix. They had a hardness of about 32 GPa and a remarkable plasticity (40% in indentation deformation) at loads exceeding their elastic limit. They were also found to have a high scratch toughness in addition to a low (about 0.2) friction coefficient. The combination of hardness and ductility was correlated with film phase composition and structural analyses, using concepts of nanocomposite mechanics. The properties of the TiC/a-C composites make them beneficial for surface wear and friction protection.
References
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:33 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 2, 2024, 3:12 p.m.) |
Indexed | 1 month, 1 week ago (July 24, 2025, 8:16 a.m.) |
Issued | 28 years, 1 month ago (July 15, 1997) |
Published | 28 years, 1 month ago (July 15, 1997) |
Published Print | 28 years, 1 month ago (July 15, 1997) |
@article{Voevodin_1997, title={Nanocrystalline carbide/amorphous carbon composites}, volume={82}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.365784}, DOI={10.1063/1.365784}, number={2}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Voevodin, A. A. and Prasad, S. V. and Zabinski, J. S.}, year={1997}, month=jul, pages={855–858} }