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Elastic and plastic deformation of diamondlike carbons

Lookup NU author(s): Professor Steve Bull

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Abstract

In exploiting tribological applications of diamondlike carbons (DLC, a-C:H), both elastic and plastic properties must be optimized. We use tight-binding molecular dynamics to generate realization of DLC, from which can be obtained properties and their dependence on the precursors used, and on the H/C ratio. Here we analyze the elastic properties and especially the rebonding events which occur under strain. Rebonding occurs only at rather large strains; in some cases, it is reversible. Hydrogen has a key role in determining the number of carbons with less than four carbon neighbors, since it is mainly these carbons which participate in the major plastic (rebonding) events. © 1998 American Institute of Physics.


Publication metadata

Author(s): Stoneham AM, Godwin PD, Sutton AP, Bull SJ

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 1998

Volume: 72

Issue: 24

Pages: 3142-3144

Print publication date: 01/01/1998

ISSN (print): 0003-6951

ISSN (electronic): 1520-8842

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.121573

DOI: 10.1063/1.121573


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