Permeability and Structure of Cellular Ceramics: A Comparison between Two Preparation Techniques

This work presents a comparative study of structural and aerodynamic properties of cellular ceramics prepared by two different techniques: the ceramic replication of an organic substrate and the gelcasting of foams. Permeability constants calculated from Ergun's equation were related to their a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 1998-12, Vol.81 (12), p.3349-3352
Main Authors: Innocentini, Murilo D. M., Sepulveda, Pilar, Salvini, Vania R., Pandolfelli, Victor C., Coury, José R.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Miscellaneous
Technical ceramics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work presents a comparative study of structural and aerodynamic properties of cellular ceramics prepared by two different techniques: the ceramic replication of an organic substrate and the gelcasting of foams. Permeability constants calculated from Ergun's equation were related to their apparent porosity and pore size. The technique of gelcasting of foams yielded structures as porous as the replication technique does, but with smaller pores and a fully densified strut. This type of structure ensures a higher mechanical strength without a significant decrease in the permeability.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1998.tb02782.x