Journal
SCRIPTA MATERIALIA
Volume 65, Issue 11, Pages 966-969Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.08.025
Keywords
Hexagonal boron nitride; Pressure-induced growth; Microstructure; Texture; Anisotropy property
Categories
Funding
- National Natural Science Foundation of China [50972152]
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Textured hexagonal boron nitride ceramics were prepared by hot pressing, using boron nitride powders as starting materials. The results showed that a high sintering temperature and moderate external pressure helped to form a textured microstructure when using boron nitride powder with a low degree of order and a broad particle size distribution. The flake-like boron nitride grains tended to orient along the hot pressing direction via pressure-induced preferential grain growth. The obtained textured boron nitride ceramics demonstrated strong anisotropic mechanical and thermal properties. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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