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Pressureless sintering, mechanical properties and oxidation behavior of ZrB2 ceramics doped with B4C.
- Source :
-
Journal of the European Ceramic Society . Sep2015, Vol. 35 Issue 10, p2699-2705. 7p. - Publication Year :
- 2015
-
Abstract
- A pressureless sintering process using different amounts of boron carbide (B 4 C) as sintering aid was investigated for the densification of zirconium diboride (ZrB 2 ). The sintering mechanism was converted from solid state sintering to liquid phase sintering as sintering temperature increased from 2150 to 2250 °C. B 4 C addition improved densification by removing the oxide impurities during solid state sintering. Besides, it could restrain the growth of ZrB 2 grains. At 2250 °C, ZrB 2 and B 4 C formed liquid phase which was well wetting ZrB 2 grains during liquid phase sintering process. The different roles of B 4 C on the microstructure development, mechanical properties and oxidation resistance of the sintered ZrB 2 -based ceramics were investigated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 35
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 102464448
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2015.03.030