Influence of Nano-Silica on Microstructure and Mechanical Properties of SiO2/BN Ceramics

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In this paper, nano-silica particles were incorporated to a fused silica-boron nitride dual phase ceramics originally using micrometer sized particles as starting powders. Effects of nano-silica content on density, sintering behavior, mechanical properties and microstructure of the dual phase ceramics were investigated. It was found that with the addition of nano-silica particles, the density and mechanical properties of the dual phase ceramics increased. Flexural strength and fracture toughness of them attained to 51.4MPa and 0.8MPa·m1/2, respectively. The increased density and spatial network structure of fused silica attribute to the improvement of the mechanical properties of the dual phase ceramics.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

1529-1532

Citation:

L. Z. Zhou and D. C. Jia, "Influence of Nano-Silica on Microstructure and Mechanical Properties of SiO2/BN Ceramics ", Key Engineering Materials, Vols. 353-358, pp. 1529-1532, 2007

Online since:

September 2007

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$38.00

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