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Structural Characters and Tribological Properties of Diamondlike Carbon Films

Published online by Cambridge University Press:  22 February 2011

Xiao-Ming He ,
Wen-Zhi Li  and
Heng-De Li
Xiao-Ming He
Affiliation:
Dept. of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Wen-Zhi Li
Affiliation:
Dept. of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Heng-De Li
Affiliation:
Dept. of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
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Abstract

Diamond-like carbon films have been prepared by using dual ion beam sputtering deposition under CH++Ne+ bombardment with energies 50–800 eV. The obtained films possess a smooth surface and an amorphous structure containing some sp3 bondings. DLC films bombarded by low energy CH++Ne+ exhibit the relatively high binding energy and electrical resistivity which are approximate to those of diamond. It is believed that a Mo interlayer between AISI 52100 steel substrates and DLC films brings the films good adhesion. This offers promises to DLC films on bearing steel to perform a stable wearing in much lower friction coefficient (<0.1) under large wear loads (30–90N). Experimentally, low wear coefficients and high anti wear numbers obtained prove that the DLC films indeed possess excellent wear resistance. In addition, the speed or the momentum of friction motion was revealed to exert some serious effects upon the wear resistance of DLC films when the wearing was carried out under very high wear load (> 30 N).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 316: Symposium A – Materials Synthesis and Processing Using Ion Beams , 1993 , 605
Copyright
Copyright © Materials Research Society 1994

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