Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/43379
標題: Catalysis effect of metal doping on wear properties of diamond-like carbon films deposited by a cathodic-arc activated deposition process
作者: Chang, Y.Y.
吳威德
Wang, D.Y.
Wu, W.T.
關鍵字: metal doped DLC films
wear
cathodic-arc evaporation
amorphous-carbon
raman-spectra
tribological performance
residual-stress
thin-films
dlc films
coatings
evaporation
multilayer
vacuum
期刊/報告no:: Thin Solid Films, Volume 420, Page(s) 241-247.
摘要: Diamond-like carbon (DLC) films containing various metal dopings were synthesized by using a cathodic-arc activated deposition process. Metal plasma with intensive ion energies catalyzes the decomposition of hydrocarbon gases (C2H2) and induces the formation of hydrogenated DLC films with a mixture Of sp(2) and sp(3) carbon bonds. The composite film structure consists of a metal-doped DLC film on top of a graded metal nitride interlayer, which provides enhanced mechanical and tribological properties. The catalysis effect of three common transition metal plasmas, including Cr, Ti, and Zr was investigated. This experiment depicts the advantage of the catalysis effect of Cr plasma in synthesizing DLC films with a higher sp(3) carbon bond ratio comparing with that of Ti and Zr plasma. The wear properties were correlated with the metal doping. The optimized Cr-C:H films with Cr and CrN interlayers give satisfactory wear performance in a ball-on-disk test with a lower wear rate of 2 x 10(-17) m(3)/Nm and a lower friction coefficient of 0.1 sliding against WC counterparts. Wear life of Cr plasma activated DLC (Cr-C:H) outperforms that of Ti and Zr by nine- and twofold, respectively. The Cr-C:H film exhibits a dense microstructure and a higher sp(3) bond ratio, showing great potential for wear applications. (C) 2002 Elsevier Science B.V. All rights reserved.
URI: http://hdl.handle.net/11455/43379
ISSN: 0040-6090
文章連結: http://dx.doi.org/10.1016/s0040-6090(02)00801-5
Appears in Collections:材料科學與工程學系

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