Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2010, Vol. 31 ›› Issue (1): 56-59.DOI: -

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Properties of B4C ceramics prepared by pressureless sintering

Yue, Xin-Yan (1); Ying, Wei-Feng (1); Yu, Liang (1); Ru, Hong-Qiang (1)   

  1. (1) Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-01-15 Published:2013-06-20
  • Contact: Yue, X.-Y.
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Abstract: The effect of SiC and C sintering aids on the mechanical properties of B4C ceramics prepared by pressureless sintering was investigated. Micro-powder B4C, SiC and C were used as starting materials. The results showed that the optimum sintering process is at 1975°C holding for 30min. The density, hardness and flexural strength all increase first then decrease with increasing SiC and C contents of which the optimal amount is 6% and 5%, respectively. The optimum bulk density, hardness, flexural strength and fracture toughness are 2.45g/cm3, 35GPa, 240MPa and 3.0MPa·m1/2, respectively.

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