Paper Title:
Sp2 Hybridization Effects on Friction of Diamond-Like Carbon Film (110) Surfaces Studied by First Principles Molecular Dynamics
  Abstract

The influence of sp2 hybridization on friction and structure of diamond-like carbon (DLC) films was studied by first-principles molecular dynamics. First-principles calculations have been performed using the pseudo-potential plane wave method. Our results show that: 1) The buffer role of sp2-hybridized state carbon between grain boundaries greatly affected the residual stress of DLC film, and hence the friction decreased steadily with the increased in sp2 hybridization content. 2) For thinner films, there was very greatly differences in stress between diamond-like carbon film (110) surfaces in <001> and<1-10> directions. The difference in friction force between soft and hard directions was nonexistent, when the sp2-hybridized state carbon atoms increased to 80%, perhaps because the originally hard C-C and C-H bonds changed, and steadily reject interaction was drive break.

  Info
Periodical
Advanced Materials Research (Volumes 335-336)
Chapter
Chapter 10: Functional Materials
Edited by
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
Pages
1327-1333
DOI
10.4028/www.scientific.net/AMR.335-336.1327
Citation
L. L. Wang, Q. Wan, Y. J. Tang, C. Y. Wang, "Sp2 Hybridization Effects on Friction of Diamond-Like Carbon Film (110) Surfaces Studied by First Principles Molecular Dynamics", Advanced Materials Research, Vols. 335-336, pp. 1327-1333, 2011
Online since
September 2011
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Price
$35.00
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