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Journal of Materials Science

, Volume 43, Issue 19, pp 6556–6561 | Cite as

Characterization of cellular ceramics for high-temperature applications

  • W. Acchar
  • E. G. Ramalho
  • F. B. M. Souza
  • W. L. Torquato
  • V. P. Rodrigues
  • M. D. M. Innocentini
Article

Abstract

Polymeric sponge replication technique is the most used process to obtain ceramic foams with a cellular structure for filtration applications. This technique is based on an impregnation of a polymeric sponge with ceramic slurry, removal by squeezing, followed by burning out polymer and high temperature sintering. Ceramic filters must present high permeability and strength. However, these parameters are influenced in different ways by the processing method and the consequent cellular structure. In this work the relationship between permeability and strength has been investigated for 10- and 40-ppi (pores per linear inch) Al2O3–ZrO2 filter materials. Characterization included the evaluation of the permeability and strength as well as the microstructural analyses of the fracture surface.

Keywords

Pressure Drop Cordierite Ceramic Foam Thermal Protection System Permeability Constant 

Notes

Acknowledgement

The authors would like to thank CNPq-CT-Petro for the financial support.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • W. Acchar
    • 1
    • 2
    • 3
  • E. G. Ramalho
    • 2
  • F. B. M. Souza
    • 2
  • W. L. Torquato
    • 3
  • V. P. Rodrigues
    • 4
  • M. D. M. Innocentini
    • 4
  1. 1.Department of PhysicsFederal University of Rio Grande do NorteNatalBrazil
  2. 2.Pos-graduation Program of Mechanical EngineeringFederal University of Rio Grande do NorteNatalBrazil
  3. 3.Pos-graduation Program of Science and Materials EngineeringFederal University of Rio Grande do NorteNatalBrazil
  4. 4.Course of Chemical EngineeringUniversity of Ribeirão Preto, UNAERPRibeirão PretoBrazil

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