Preparation and characterization of porous Si sub(3)N sub(4) ceramics prepared by compression molding and slip casting methods

Porous silicon nitride (Si sub(3)N sub(4)) ceramics were fabricated by compression molding and slip casting methods using petroleum coke as pore forming agent, and Y sub(2)O sub(3)-Al sub(2)O sub(3) as sintering additives. Microstructure, mechanical properties and gas permeability of porous Si sub(3...

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Published inBulletin of materials science Vol. 33; no. 5; pp. 619 - 624
Main Authors Yu, Fangli, Wang, Huanrui, Bai, Yu, Yang, Jianfeng
Format Journal Article
LanguageEnglish
Published 01.10.2010
Subjects
Ceramics
Mechanical properties
Microstructure
Permeability
Porosity
Pressure molding
Silicon nitride
Slip casting
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Summary:Porous silicon nitride (Si sub(3)N sub(4)) ceramics were fabricated by compression molding and slip casting methods using petroleum coke as pore forming agent, and Y sub(2)O sub(3)-Al sub(2)O sub(3) as sintering additives. Microstructure, mechanical properties and gas permeability of porous Si sub(3)N sub(4) ceramics were investigated. The mechanical properties and microstructure of porous Si sub(3)N sub(4) ceramics prepared by compression molding were better than those which were prepared by slip casting method, whereas slip casting method is suitable for the preparation of porous Si sub(3)N sub(4) ceramics with higher porosity and excellent gas permeability.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-010-0094-9