Title of article
In-situ reaction bonding of porous SiC ceramics
Author/Authors
Ding، نويسنده , , Shuqiang and Zeng، نويسنده , , Yu-Ping and Jiang، نويسنده , , Dongliang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
4
From page
140
To page
143
Abstract
Porous SiC ceramics were prepared by an in-situ reaction bonding process from SiC, Al2O3 and graphite in air at 1400–1550 °C. The reaction bonding behavior during the sintering was studied. The surface of SiC particles is oxidized to amorphous silica above 750 °C. When the sintering temperature reaches 1100 °C, the amorphous silica begins to be crystallized to cristobalite. After 1400 °C, the oxidation-derived silica reacts with Al2O3 to form mullite. Porous SiC ceramics are bonded by the silica and mullite. In addition, the effects of sintering temperatures on the reaction bonding behavior, open porosity and flexural strength were investigated.
Keywords
Reaction bonding , SiC , SiO2 , Mullite
Journal title
Materials Characterization
Serial Year
2008
Journal title
Materials Characterization
Record number
2266656
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