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Fabrication and characterization of highly porous mullite ceramics

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Title: Fabrication and characterization of highly porous mullite ceramics
Authors: She, J.H. jihong-she@aist.go.jp, Ohji, T.1
Source: Materials Chemistry & Physics. Jun2003, Vol. 80 Issue 3, p610. 5p.
Subjects: Mullite, Porosity
Abstract: Highly porous mullite ceramics were fabricated by a reaction-bonding technique from a powder mixture of Al2O3 and SiC, with graphite particles as the pore-forming agent. The effects of sintering temperature on porosity and strength as well as pore size and surface area were investigated. It has been shown that the strength and pore size increase but the porosity and surface area decrease with the increase in sintering temperature. Due to the formation of a fine-grained microstructure with well-developed necks, an average strength up to 106 MPa was achieved at a porosity of 32.4%. On the other hand, a relatively high surface area of 12.4 m2 g−1 was obtained for a 61% porous mullite ceramic, which was observed to have a good thermal-shock resistance to crack propagation. [Copyright &y& Elsevier]
Copyright of Materials Chemistry & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 9656369
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Fabrication and characterization of highly porous mullite ceramics
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  Data: <searchLink fieldCode="AR" term="%22She%2C+J%2EH%2E%22">She, J.H.</searchLink><i> jihong-she@aist.go.jp</i><br /><searchLink fieldCode="AR" term="%22Ohji%2C+T%2E%22">Ohji, T.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Materials+Chemistry+%26+Physics%22">Materials Chemistry & Physics</searchLink>. Jun2003, Vol. 80 Issue 3, p610. 5p.
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  Data: Highly porous mullite ceramics were fabricated by a reaction-bonding technique from a powder mixture of Al2O3 and SiC, with graphite particles as the pore-forming agent. The effects of sintering temperature on porosity and strength as well as pore size and surface area were investigated. It has been shown that the strength and pore size increase but the porosity and surface area decrease with the increase in sintering temperature. Due to the formation of a fine-grained microstructure with well-developed necks, an average strength up to 106 MPa was achieved at a porosity of 32.4%. On the other hand, a relatively high surface area of 12.4 m2 g−1 was obtained for a 61% porous mullite ceramic, which was observed to have a good thermal-shock resistance to crack propagation. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials Chemistry & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/S0254-0584(03)00080-4
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