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Journal of Nanomaterials
Volume 2014, Article ID 286484, 6 pages
http://dx.doi.org/10.1155/2014/286484
Research Article

Microstructure Changes of Ti-Al-C Films Deposited by Filtered Cathodic Vacuum Arc

1School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang 471023, China
2State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
3Henan Key Laboratory of Materials Tribology, Luoyang 471003, China

Received 5 March 2014; Accepted 2 April 2014; Published 24 April 2014

Academic Editor: Jinlong Jiang

Copyright © 2014 Xianjuan Pang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanocomposite Ti-Al-C films were deposited by filtered cathodic vacuum arc (FCVA) at different CH4 flows. The deposited films were characterized in terms of elemental and phase compositions, chemical bonds, and texture as a function of CH4 flow rate by XRD, XPS, HRTEM, Raman spectroscopy, and IR spectroscopy. The results show that the TiC grain size decreases from 4.2 to 2.9 nm as the CH4 flow rate increases from 30 to 80 sccm. The analysis of XPS, HRTEM, and Raman spectroscopy shows that the microstructure of deposited films turns from a TiC dominant TiC-C film to a carbon network dominant TiAl-doped a-C film structure as the CH4 flow increases from 30 sccm to 80 sccm. IR spectroscopy shows that most of the hydrogen atoms in the deposited films are bonded to the sp3-hybridized C atoms. All the composition and microstructure change can be explained by considering the plasma conditions and the effect of CH4 flow.