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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.120  No.1406 (October) (2012)  >  pp.387-392

Journal of the Ceramic Society of Japan
<<Previous article Vol.120  No.1406 (October) (2012)   pp.387 - 392 Next article>>

The effects of SiCp addition on the z-value and mechanical properties of β-Sialon–SiCp refractories

Zhaohui HUANG1), Juntong HUANG1), Minghao FANG1), Saifang HUANG1), Yan’gai LIU1), Xiaoxian WU1), Jingzhou YANG1)
1) School of Materials Science and Technology, China University of Geosciences (Beijing)

The effects of SiCp addition on the z-value, microstructure and mechanical properties of β-Si6−zAlzOzN8−z–SiCp were investigated. The results showed that z-value of β-Sialon decreased from 2.66 to 1.20 with the increase of SiCp addition, while the apparent porosity of β-Sialon–SiCp composites increased. The bending strength and compressive strength decreased due to the increase of the apparent porosity and the weak cohesion resulted from the thermal expansion coefficient mismatch between SiCp and β-Sialon matrix. Moreover, a linear regression model used to identify the relationship between the content of SiC and z value of β-Sialon is fitted.


Keyword:
β-Sialon–SiCp, z-Value, Microstructure, Mechanical properties, Refractories

Received: March 07, 2012
Accepted: May 08, 2012 , Published online: October 01, 2012
Copyright © 2012 The Ceramic Society of Japan

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