Nanostructured Ceramic Oxides with a Slow Crack Growth Resistance Close to Covalent Materials

Jérôme Chevalier (1) , Sylvain Deville (1) , Gilbert Fantozzi (1) , Jose Bartolome , Carlos Pecharroman , José S Moya (2) , Luis A Diaz , Ramon Torrecillas (3)

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
2 ICMM - Instituto de Ciencia de Materiales de Madrid
3 Instituto Nacional del Carbón

Oxide ceramics are sensitive to slow crack growth because adsorption of water can take place at the crack tip, leading to a strong decrease of the surface energy in humid (or air) conditions. This is a major drawback concerning demanding, long-term applications such as orthopaedic implants. Here we show that a specific nanostructuration of ceramic oxides can lead to a crack resistance never reached before, similar to that of covalent ceramics.

Domaines: Matériaux

Jérôme Chevalier, Sylvain Deville, Gilbert Fantozzi, Jose Bartolome, Carlos Pecharroman, et al.. Nanostructured Ceramic Oxides with a Slow Crack Growth Resistance Close to Covalent Materials. Nano Letters, 2005, pp.1297-1301. ⟨10.1021/nl050492j⟩. ⟨hal-00436807⟩