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2641628 
Journal Article 
Microstructure, mechanical and thermal properties of in situ toughened boron carbide-based ceramic composites co-doped with tungsten carbide and pyrolytic carbon 
Yin, Jie; Huang, Z; Liu, X; Zhang, Z; Jiang, D 
2013 
Yes 
Journal of the European Ceramic Society
ISSN: 0955-2219 
33 
10 
1647-1654 
WOS:000319232700008 
Boron carbide (B4C)-based ceramics were pressureless sintered to a relative density of 96.1% at 2150 degrees C, with the co-incorporation of tungsten carbide and pyrolytic carbon. The as-batched boron carbide power was 7.89 m(2) g(-1) in surface area. A level of fracture toughness as high as 5.80 +/- 0.12 MPa m(1/2) was achieved in the BW-6C composite. Sintering aids of carbon and tungsten boride were formed by an in situ reaction. The toughness improvement was attributed to the presence of thermal residual stress as well as the W2B5 platelets. The thermal conductivity and thermal expansivity of the BW-6C composite as a function of temperature are also reported in this work. Our current study demonstrated that the B4C-W2B5 composites could be potential candidate materials for structural applications. (C) 2013 Elsevier Ltd. All rights reserved. 
B4C; Particulate-reinforced composites; Pressureless sintering; In situ toughening