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Article Dans Une Revue Journal of the European Ceramic Society Année : 2012

Real time TEM observation of alumina ceramic nano-particles during compression

Résumé

The behavior of alumina nano-particles taken from a commercial powder is investigated during in situ compression experiments in a transmission electron microscope (TEM). Small particles of 40 nm in diameter can undergo severe plastic deformation without failure, whereas brittle fracture is observed for 120 nm sized nano-particles. This is evidence of a critical size under which alumina, at least in the form of nano-particles, cannot be considered as brittle materials even at room temperature and a direct observation of the grinding limit generally observed during ball milling.

Domaines

Matériaux

Dates et versions

hal-00696087 , version 1 (10-05-2012)

Identifiants

Citer

Emilie Calvié, Lucile Joly-Pottuz, Claude Esnouf, Philippe Clément, Vincent Garnier, et al.. Real time TEM observation of alumina ceramic nano-particles during compression. Journal of the European Ceramic Society, 2012, 32, pp.2067. ⟨10.1016/j.jeurceramsoc.2012.02.029⟩. ⟨hal-00696087⟩
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