Nanostructured ceramic oxides with a slow crack growth resistance close to covalent materials.

@article{Chevalier2005NanostructuredCO,
  title={Nanostructured ceramic oxides with a slow crack growth resistance close to covalent materials.},
  author={J{\'e}r{\^o}me Chevalier and Sylvain Deville and Gilbert Fantozzi and Jos{\'e} F. Bartolom{\'e} and Carlos Pecharrom{\'a}n and Jos{\'e} Seraf{\'i}n Moya and Lu{\'i}s Antonio D{\'i}az and Ram{\'o}n Torrecillas},
  journal={Nano letters},
  year={2005},
  volume={5 7},
  pages={1297-301}
}
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. 

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