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Materials 2010, 3(1), 1-8; doi:10.3390/ma3010001
Article

Feasibility of Using Multilayer Platelets as Toughening Agents

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Received: 22 October 2009 / Revised: 21 December 2009 / Accepted: 22 December 2009 / Published: 24 December 2009
(This article belongs to the Special Issue Composite Materials)
Download PDF [567 KB, uploaded 25 December 2009]

Abstract

It is known that the toughness of brittle ceramics can be improved significantly with the addition of hard platelets. In the present study, platelet-shape multilayer ceramic laminates are utilized as a toughening agent for alumina ceramics. They are prepared by laminating the BaTiO3-based ceramic tapes. Although the elastic modulus of the BaTiO3-based platelets is lower than that of the alumina matrix, and the platelets are also reactive to alumina at elevated temperatures, the weak platelets are found to exhibit the ability to deflect major matrix cracks by forming a large number of microcrack branches within the platelets, thus achieving the desired toughening effect.
Keywords: composite; toughening; platelet; crack deflection composite; toughening; platelet; crack deflection
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Chin, Y.-L.; Tuan, W.-H. Feasibility of Using Multilayer Platelets as Toughening Agents. Materials 2010, 3, 1-8.

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