Strong, tough and stiff bioinspired ceramics from brittle constituents.
By F. Bouville, Eric Maire, S. Meille, B. Van de Moortèle, Adam J. Stevenson, Sylvain Deville. Nature Materials, 2014
852 citations recorded by the source corpus.
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 difficult 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 (470 MPa), high toughness (22 MPa m(1/2)), 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.
Subfields: Biomaterials, Biomedical Engineering, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/7fadc6f3d9afe5ded0c6b08ca8a2e2749dc57ed2
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Citations in the corpus
- Nacre-inspired composites with different macroscopic dimensions: strategies for improved mechanical performance and applications (2018, background): “Deville et al.95 have successfully synthesized alumina-based nacre-inspired composites with an ~98% content of alumina (higher than that of natural nacre) through freeze-casting and subsequent thermal-pressing (Fig.”