Journal
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
Volume 122, Issue 1424, Pages 271-275Publisher
CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
DOI: 10.2109/jcersj2.122.271
Keywords
Boron carbide; High pressure Spark plasma sintering; Dynamic toughness
Categories
Funding
- [EP/K008749/1]
- [PCCE 3/2012]
- EPSRC [EP/K008749/1, EP/K008749/2] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K008749/1, EP/K008749/2] Funding Source: researchfish
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Dense boron carbide (above 95%) was achieved through high pressure (300 MPa) and low temperature (1600 degrees C) Spark Plasma Sintering (SPS). This approach resulted in improvement of fracture toughness and of dynamic toughness when compared to corresponding toughness values of the sample sintered by conventional SPS (2100 degrees C, 50 MPa). Dynamic toughness was extracted from Split Hopkinson Pressure Bar measurements. Results are understood based on microstructure and on very different behaviour of the samples in respect to residual B2O3 and carbon available in the raw B4C powder. (C) 2014 The Ceramic Society of Japan. All rights reserved.
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