Preparation and properties of porous silicon carbide based ceramic filter

Porous silicon carbide ceramics with high open porosity and large pore size are usually applied as filters for the cleaning of hot dust gases. However, the large porosity and large pore size will decrease the mechanical properties. In the present study, porous SiC ceramics were prepared using benton...

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Bibliographic Details
Published in:Journal of alloys and compounds 2016-11, Vol.684, p.613-615
Main Authors: Yuan, Bo, Li, Hong-Xia, Wang, Gang, Yu, Jian-Bin, Ma, Wei-Kui, Liu, Lei-Feng, Liu, Yong-Sheng, Shen, Zhi-Jian
Format: Article
Language:English
Subjects:
Bentonite
Bonding
Carbides
Ceramics
Mechanical properties
Microstructure
Oxides bonding
Pore size
Porosity
Porous SiC ceramics
Porous silicon
Silicon carbide
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Summary:Porous silicon carbide ceramics with high open porosity and large pore size are usually applied as filters for the cleaning of hot dust gases. However, the large porosity and large pore size will decrease the mechanical properties. In the present study, porous SiC ceramics were prepared using bentonite as bonding phase. The effects of sintering temperature on the microstructure and the compressive strength were studied. Bentonite could melt and spread on the surface of silicon carbide particles at all the sintering temperatures. However, the bonding effects were very different at different temperatures. •Porous SiC ceramics were prepared using bentonite as bonding phase.•Bentonite formed a thin layer on the surface of SiC particles.•High open porosity, large pore size and high mechanical properties were obtained.
ISSN:0925-8388
1873-4669
1873-4669
DOI:10.1016/j.jallcom.2016.05.216