Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 31, Issue 13, Pages 2277-2284Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2011.05.042
Keywords
Hot pressing; Composites; Mechanical properties; Al2O3; Boron nitride nanotubes
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Funding
- National Natural Science Foundation of China [50872072, 51042005, 50972076]
- Independent Innovation Foundation of Shandong University [2009TS001]
- Graduate Independent Innovation Foundation of Shandong University [31370070613213]
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Boron nitride nanotubes (BNNTs)/alumina composites were fabricated by hot pressing. The mechanical properties of the composites are greatly dependent upon the content of BNNTs. In comparison with monolithic alumina, the incorporation of BNNTs results in the improvement of bending strength and fracture toughness owing to the effective inhibition of grain growth. A routine toughening mechanism, especially the bridging of BNNTs at grain boundaries and the sufficient physical bonding between BNNTs and alumina matrix, is dominantly responsible for the increase in mechanical properties. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
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