Paper Title:
In Situ Combustion Synthesis of h-BN-SiC High-Temperature Ceramics
  Abstract

The feasibility of fabricating h-BN-SiC high-temperature ceramics by in-situ combustion synthesis was demonstrated by igniting the mixture of boron carbide and silicon powder under 100MPa nitrogen pressure. The reaction thermodynamics and the adiabatic combustion temperature were calculated theoretically. The phase composition, microstructure and mechanical properties of composite were identified by XRD and SEM. The maximum bending strength and fracture toughness of the composite were 65.2 MPa and 1.4 MPa·m1/2 under room temperature, respectively. The effects of h-BN and SiC dilution contents on the mechanical properties of composite were also discussed.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1501-1504
DOI
10.4028/www.scientific.net/KEM.353-358.1501
Citation
H. B. Li, Y. T. Zheng, J. C. Han, "In Situ Combustion Synthesis of h-BN-SiC High-Temperature Ceramics", Key Engineering Materials, Vols. 353-358, pp. 1501-1504, 2007
Online since
September 2007
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Price
$32.00
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