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Rheological analysis of creep in hydrogenated amorphous carbon films

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Lemoine, P, Quinn, JP, Maguire, PD, Papakonstantinou, P and Dougan, N (2006) Rheological analysis of creep in hydrogenated amorphous carbon films. THIN SOLID FILMS, 514 (1-2). pp. 223-230. [Journal article]

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DOI: 10.1016/j.tsf.2006.02.022

Abstract

We present a nanoindentation study to detect time-dependent deformations in non-polymeric hydrogenated amorphous carbon films. When the bonded hydrogen content increases from 18 to 36 at.%, as measured by Fourier transform infrared spectroscopy, we find that the film becomes less graphitic and softer. Moreover, its hardness shows a larger sensitivity to strain rate and the film with the higher hydrogen content also exhibits a larger and slower creep deformation when subjected to a step-loading experiment. The creep data compares well to the Burgess model and we discuss the influence of Van der Waals bonds on the deformation of the carbon network. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:Journal article
Keywords:carbon; creep; Fourier transform infrared spectroscopy; Raman scattering
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:7443
Deposited By:Professor Paul Maguire
Deposited On:18 Jan 2010 12:08
Last Modified:07 Apr 2014 14:36

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