Influence of Pressure on the Crystallization in SiO2f/SiO2 Composites

Abstract:

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The influence of pressure on the crystallization behavior in SiO2f/SiO2 composites hotpressed at 1350°C was studied. The crystalline phase composition analysis on SiO2f/SiO2 composites revealed that the formation of cristobalite was promoted when the hot-pressing pressure ≤ 12 MPa, however suppressed with higher pressure applied. It can be ascribed to the nucleation mechanism change from surface nucleation to bulk nucleation. Analysis on relative density as well as fracture microstructure of SiO2f/SiO2 composites confirmed the conclusion.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1236-1238

DOI:

10.4028/www.scientific.net/KEM.336-338.1236

Citation:

C. M. Xu et al., "Influence of Pressure on the Crystallization in SiO2f/SiO2 Composites", Key Engineering Materials, Vols. 336-338, pp. 1236-1238, 2007

Online since:

April 2007

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$35.00

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