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Article Dans Une Revue Applied Surface Science Année : 2003

Fracture of glassy materials as detected by real-time Atomic Force Microscopy (AFM) experiments

Résumé

We have studied the low speed fracture regime for different glassy materials with variable but controlled length scales of heterogeneity in a carefully mastered surrounding atmosphere. By using optical and atomic force (AFM) microscopy techniques we tracked in real-time the crack tip propagation at the nanometer scale on a wide velocity range (1 mm/s and 0.1 nm/s and below). The influence of the heterogeneities on this velocity is presented and discussed. Our experiments revealed also -for the first time- that the crack advance proceeds through nucleation, growth and coalescence of nanometric damage cavities inside the amorphous phase, which generate large velocity fluctuations. The implications of the existence of such a nano-ductile fracture mode in glass are discussed.

Dates et versions

hal-00134349 , version 1 (01-03-2007)

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Citer

F. Celarie, S. Prades, Daniel Bonamy, A. Dickele, L. Ferrero, et al.. Fracture of glassy materials as detected by real-time Atomic Force Microscopy (AFM) experiments. Applied Surface Science, 2003, 212-213, pp.92. ⟨hal-00134349⟩
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