New design concept of structural ceramics―ceramic nanocomposites
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TLDR
In this paper, intergranular nanocomposites were found to have two to five times higher toughness and strength at room temperature than those of monolithic materials, and the hardness, toughness, strength and fracture resistance for creep and fatigue at high temperatures as well as the thermal shock fracture resistance were also strongly improved for these composites.Abstract:
Ceramic nanocomposites can be divided into three categories: intergranular nanocomposite, intergranular nanocomposite and nano/nano composite. The intra- and intergranular nanocomposites were found to show the two to five times higher toughness and strength at room temperature than those of monolithic materials. The hardness, toughness, strength and fracture resistance for creep and fatigue at high temperatures as well as the thermal shock fracture resistance were also strongly improved for these composites. On the other hand, the new function such as machinability and superplasticity was observed for the nano/nano composites. The fabrication processes of these nanocomposites by sintering methods, micro and nanostructure observations, improvements of mechanical properties were reviewed and the roles of the nano-size dispersoids were discussed. Finally the new approach on structural materials design will be given.read more
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The preparation of magnetic nanoparticles for applications in biomedicine
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Pedro Tartaj,María del Puerto Morales,Sabino Veintemillas-Verdaguer,T. González-Carreño,Carlos J. Serna +4 more
TL;DR: In this paper, a review of state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications is presented, with a special emphasis on showing the benefits of using nanoparticles.
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Single-wall carbon nanotubes as attractive toughening agents in alumina-based nanocomposites
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References
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Book
Fracture Mechanics of Ceramics
TL;DR: In this article, a linear-elastic fracture mechanics can be applied to describe the failure behavior of small flaws in ceramic materials, which is caused by the extension of small faults.
Book
Ultrastructure processing of advanced ceramics
TL;DR: The Third International Conference on Ultrastructure Processing of Ceramics, Glasses, and Composites held in San Diego in February 1987 as discussed by the authors was devoted to precursors and chemistry for ultrastructure processing; sol-gel science and technology; powders and colloids; advanced ceramics; and composites, new materials, and techniques.