Insights into the fracture mechanisms and strength of amorphous and nanocomposite carbon.
Phys Rev Lett
; 96(18): 185503, 2006 May 12.
Article
in En
| MEDLINE
| ID: mdl-16712372
Tight-binding molecular dynamics simulations shed light into the fracture mechanisms and the ideal strength of tetrahedral amorphous carbon and of nanocomposite carbon containing diamond crystallites, two of the hardest materials. It is found that fracture in the nanocomposites, under tensile or shear load, occurs intergrain and so their ideal strength is similar to the pure amorphous phase. The onset of fracture takes place at weakly bonded sites in the amorphous matrix. On the other hand, the nanodiamond inclusions significantly enhance the elastic moduli, which approach those of diamond.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2006
Document type:
Article
Affiliation country:
Grecia
Country of publication:
Estados Unidos