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2006 | OriginalPaper | Chapter

How to Toughen Ceramics — Nanocomposites

Authors : H. Awaji, S. -M. Choi

Published in: Fracture of Nano and Engineering Materials and Structures

Publisher: Springer Netherlands

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Ceramic-based nanocomposites with intra-type nano-structure have high strength with moderate fracture toughness. In this research, the toughening and strengthening mechanisms of the ceramic-based nanocomposites will be explained by dislocation activities even in brittle materials. Based on these mechanisms, we fabricated toughened and strengthened alumina-nickel nanocomposites. Fracture toughness of the annealed nanocomposites was 7.6 MPam

1/2

, which was two times higher than that of monolithic alumina.

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