Fabrication of Porous SiC Ceramics Using Glass Beads.
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- Miyagawa Naomichi
- Research Center Asahi Glass Co., Ltd.
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- Shinohara Nobuhiro
- Research Center Asahi Glass Co., Ltd.
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- Takizawa Hirotsugu
- Department of Molecular Chemistry and Engineering, Faculty of Engineering, Tohoku University
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- Endo Tadashi
- Department of Molecular Chemistry and Engineering, Faculty of Engineering, Tohoku University
Bibliographic Information
- Other Title
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- ガラスビーズを用いた炭化ケイ素多孔体の作製
- ガラス ビーズ オ モチイタ タンカ ケイソ タコウタイ ノ サクセイ
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Abstract
Porous SiC ceramics have been fabricated by using SiO2-Al2O3 based glass beads. SiC powder with the anerage grain size of 0.6 μm was mixed with 5-20 wt.% glass beads by dry mixing. The average particle size of the glass beads was about 45 μm. The mixed powder was compressed into plate form and sinterd at 1970°C for 2 hours in Ar atmosphere. The resultant materials had porosities ranging from 25 to 50 %. Large spherical pores connecting through micro-sized open pores were observed in their microstructures. It has been concluded that the occurence of open pores was orginated in the formation of gas phase through the reaction, SiC+2SiO2→3SiO(g)+CO(g), in Ar atmosphere. The alumina element in the glass beads contributed to the densification of SiC matrix through the formation of liquid phase and as a result, the materials had high bending strength in spite of their high porosity.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 43 (12), 1461-1465, 1996
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206309368320
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- NII Article ID
- 10002261247
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 4118684
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed