Chapter 33. Forming by Extrusion of Annular Multichannel Monolithic Ceramics

  1. Rajan Tandon,
  2. Andrew Wereszczak and
  3. Edgar Lara-Curzio
  1. E. Rocha-Rangel1,
  2. M. S. Moreno-Guerrero1,
  3. R. T. Hernáandez-Lóopez1 and
  4. M. Rodriguez-Cruz2

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291313.ch33

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2

How to Cite

Rocha-Rangel, E., Moreno-Guerrero, M. S., Hernáandez-Lóopez, R. T. and Rodriguez-Cruz, M. (2008) Forming by Extrusion of Annular Multichannel Monolithic Ceramics, in Mechanical Properties and Performance of Engineering Ceramics II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 2 (eds R. Tandon, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291313.ch33

Author Information

  1. 1

    Departamento de Materiales, Universidad Autóonoma Metropolitana Av. San Pablo No. 180, Col. Reynosa–Tamaulipas, Méexico, D. F. 02200, Méexico

  2. 2

    Departamento de Ciencias Báasicas, Universidad Autóonoma Metropolitana Av. San Pablo No. 180, Col. Reynosa–Tamaulipas, Mexico, D. F. 02200, Mexico

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080528

Online ISBN: 9780470291313

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Keywords:

  • ducts;
  • catalytic;
  • equiaxial;
  • obtained by nitrogen absorption (BET);
  • plasticizing

Summary

The field of catalytic processes requires ceramic supports with rigorous properties and wide variety of shapes; this implies the generation of new materials with geometrically specific shapes. In this work an arrangement formed by the coaxial ensemble of two ceramic monoliths of honey comb type is presented. The central part is occupied by a multi channel tube of 12 mm diameter and density of 200 cell/in2, and the exterior part is formed by another ceramic monolith constituted by two concentric tubes; both are joined by a lattice of 100 meshes per square inch. The external diameter is 24 mm. Both internal and external monoliths were fabricated with high purity αa–alumina using the direct extrusion technique. The final product sintered at 1550°C for 2 h presents an open porosity of 39 % with an average pore size of 75 Å. In this work it is also discussed, the textural results and the microstructure analysis made by scanning electron microscopy as a function of the sintering time.