Nanostructured ceramic oxides with a slow crack growth resistance close to covalent materials.
other · Level V
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- Record sourced from PubMed, PMID 16178227.
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Abstract
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.
Medical subject headings
- Aluminum Oxide
- Biocompatible Materials
- Ceramics
- Crystallization
- Nanostructures
- Zirconium