Preparation of B₄C-CeB₆ Porous Composites by Hot Pressed Sintering

Abstract:

B₄C-CeB₆ porous composites are prepared by hot pressed sintering between 1900°C and 2000°C, and mechanical properties and phase composition of B₄C-CeB₆ porous composites were tested. The results show that the porous rate of B₄C-CeB₆ porous composites ranges between 30%-48% at sintering temperate 1900°C-2000°C. Porous rate of B₄C-CeB₆ porous composites is decreased with temperature be increased. 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.

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 120-124
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.120
• Online since: December 2014
• Authors: Ke Wu Peng*, He Li Ma, Chang Wei Gong, Yan Wang, Zhao Tan
• Keywords: B₄C-CeB₆, Flexibility Strength, Hot Pressed Sintering, Porous Composites

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