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SiC honeycomb ceramics with parallel channels and macroporous walls were prepared by combining extrusion molding with pressureless sintering technology in the presence of starch. The extrusion molding constructed honeycomb structure with parallel channels, while the starch formed spherical macropores on the channel walls. The density and bending strength of SiC honeycomb ceramics decreased with the increase of starch content, while the phase compositions did not vary with the starch content. The control in starch addition could adjust the pore structures on the channel walls of SiC honeycomb ceramics.


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Preparation and properties of SiC honeycomb ceramics by pressureless sintering technology

Show Author's information Xingzhong GUOXiaobo CAILin ZHULingjie ZHANGHui YANG( )
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Abstract

SiC honeycomb ceramics with parallel channels and macroporous walls were prepared by combining extrusion molding with pressureless sintering technology in the presence of starch. The extrusion molding constructed honeycomb structure with parallel channels, while the starch formed spherical macropores on the channel walls. The density and bending strength of SiC honeycomb ceramics decreased with the increase of starch content, while the phase compositions did not vary with the starch content. The control in starch addition could adjust the pore structures on the channel walls of SiC honeycomb ceramics.

Keywords:

honeycomb ceramic, porous ceramic, silicon carbide (SiC), pore formation
Received: 07 January 2014 Revised: 07 February 2014 Accepted: 12 February 2014 Published: 05 March 2014 Issue date: March 2014
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Publication history
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Publication history

Received: 07 January 2014
Revised: 07 February 2014
Accepted: 12 February 2014
Published: 05 March 2014
Issue date: March 2014

Copyright

© The author(s) 2014

Acknowledgements

This work is supported by the Innovation Fund for Technology-based Firms of China (12C26113303061) and High Science & Technique Brainstorm Project of Zhejiang Province of China (No. 2012C01032-1).

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