Journal
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
Volume 78, Issue -, Pages 282-287Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2018.10.016
Keywords
B4C ceramic; UHTC; Mechanical property; Oxidation behavior
Funding
- National Natural Science Foundation of China [51772028]
- Beijing Natural Science Foundation [2182064]
- Young Elite Scientist Sponsorship (YESS) Program by CAST [2015QNRC001]
- Beijing Institute of Technology Research Fund Program for Young Scholars
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Pure B4C ceramic and B4C-(ZrB2-SiC) ceramics were fabricated using hot pressing. It was found that the relative density and mechanical properties of the B4C based ceramics were greatly improved by using the introduction of (ZrB2-SiC) additives. The BZS20 ceramic was found to exhibit the optimal mechanical behavior after overall consideration of flexural strength and Vickers hardness. Most importantly, the oxidation behavior of the BZS00, BZS10, BZS20 and BZS30 ceramics were investigated at 1600 degrees C. The introduction of (ZrB2-SiC) additives significantly enhanced the anti-oxidation behavior of the B4C based ceramics. After experiments and analysis, the BZS20 ceramic were believed to exhibit the excellent combination properties of high density, high strength and good oxidation resistance.
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