We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Strong, tough and stiff bioinspired ceramics from brittle constituents.
- Authors
Stevenson, Adam J.; Deville, Sylvain; Bouville, Florian; Maire, Eric; Meille, Sylvain; de Moortèle, Bertrand Van
- Abstract
High strength and high toughness are usually mutually exclusive in engineering materials. In ceramics, improving toughness usually relies on the introduction of a metallic or polymeric ductile phase, but this decreases the material's strength and stiffness as well as its high-temperature stability. Although natural materials that are both strong and tough rely on a combination of mechanisms operating at different length scales, the relevant structures have been extremely di cult to replicate. Here, we report a bioinspired approach based on widespread ceramic processing techniques for the fabrication of bulk ceramics without a ductile phase and with a unique combination of high strength (47 MPa), high toughness (17.3 MPa m½, and high stiffness (290 GPa). Because only mineral constituents are needed, these ceramics retain their mechanical properties at high temperatures (600 °C). Our bioinspired, material-independent approach should find uses in the design and processing of materials for structural, transportation and energy-related applications.
- Subjects
CERAMICS; ARAGONITE; MATERIAL plasticity; CERAMIC materials; CRACK propagation (Fracture mechanics); VISCOELASTICITY
- Publication
Nature Materials, 2014, Vol 13, Issue 5, p508
- ISSN
1476-1122
- Publication type
Article
- DOI
10.1038/NMAT3915