Journal
SCRIPTA MATERIALIA
Volume 68, Issue 2, Pages 104-107Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.09.012
Keywords
Hexagonal boron nitride; Hot-press sintering; Texture; Microstructures
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Funding
- Natural Sciences Foundation of China [50902030, 51021002]
- Development Program for Outstanding Young Teachers in Harbin Institute of Technology [HITQNJS.2009.023]
- Fundamental Research Fund for the Central Universities [HIT.NSRIF.2010112]
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Textured hexagonal boron nitride (BN) composite ceramics with mullite as sintered additive were fabricated by hot-press sintering under different pressures. The degrees of texture and the microstructures of these materials were evaluated using X-ray diffraction, pole figures and scanning electron microscopy. The results showed that the hexagonal BN composite ceramics have obvious directional orientation. The preferred orientation of the c-axis of hexagonal BN grains was along the direction of pressure, and the sintering pressure influences texture formation. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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