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Title: Structure, elastic properties and strength of amorphous and nanocomposite carbon
Authors: Remediakis, Ioannis N. 
Fyta, Maria G. 
Kopidakis, Georgios 
Kelires, Pantelis C. 
Mathioudakis, Christos 
Keywords: Amorphous carbon;Nanocomposite carbon;Mechanical properties;Fracture
Issue Date: 2007
Publisher: Elsevier
Source: Diamond and Related Materials. Volume 16, Issue 10, October 2007, Pages 1835-1840
Abstract: We study theoretically the equilibrium structure, as well as the response under external load, of characteristic carbon-based materials. The materials considered include diamond, amorphous carbon (a-C), “amorphous diamond” and nanocomposite amorphous carbon (na-C). A universal bulk modulus versus density curve is obeyed by all structures we consider. We calculate the dependence of elastic constants on the density. The strength of a-C was found to increase in roughly a linear manner, with increasing concentration of four-fold atoms, with the maximum stress of the strongest a-C sample being about half that of diamond. The response of na-C to external load is essentially identical to the response of the embedding a-C matrix.
Rights: © 2007 Elsevier B.V.
Type: Article
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