Microstructure and Reinforcing Mechanisms of Boron Carbide–Cerium Boride Porous Composites

Abstract:

boron carbide–cerium boride porous composites are prepared by hot pressed sintering, and mechanical properties and microstructure of boron carbide–cerium boride porous composites were tested. The results show that Flexibility strength of B₄C-CeB₆ porous composites is greatly improved compared with that of monolithic porous boron carbide. B₄C react with CeO₂ to completely form CeB₆ in porous composites. CeB₆ particles in B₄C grain boundary are produced by in-situ reaction. The presence of CeB₆ reinforcing particles could also suppress growth of B₄C grains which normally leads to improved strength.

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 104-108
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.104
• Online since: December 2014
• Authors: Ke Wu Peng, He Li Ma, Chang Wei Gong, Ren Chen, Zhao Tan
• Keywords: Boron Carbide–Cerium Boride, In Situ Reaction, Microstructure, Porous Composites

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