Development and mechanical characterization of novel ceramic foams fabricated by gel-casting
Name
Ceramic foams _FINAL.pdf
Description
entire paper with figs, tables etc.
Size
5.23 MB
Format
Adobe PDF
Checksum (MD5)
dbc17ab016369326d2399e7af494e27f
Author(s)
Tulliani, J.-M.
Lombardi, M.
Palmero, P.
Fornabaio, M.
Gibson, Lorna
Date Issued
March 2013
Journal
Journal of the European Ceramic Society
Publisher
Elsevier
Citation
Tulliani, J.-M., M. Lombardi, P. Palmero, M. Fornabaio, and L.J. Gibson. “Development and Mechanical Characterization of Novel Ceramic Foams Fabricated by Gel-Casting.” Journal of the European Ceramic Society 33, no. 9 (August 2013): 1567–1576.
Version
Author's final manuscript
Abstract
Porous ceramic materials are of considerable interest for a variety of chemical and industrial applications in extremely harsh conditions, particularly at very high temperatures for long time periods. A combined gel-casting-fugitive phase process employing agar as a natural gelling agent and polyethylene spheres as pore formers was exploited to produce porous ceramic bodies. Alumina and alumina–zirconia powders were used to prepare samples having a porosity of about 65–70–75 vol%. The composite powder was produced by a surface modification route, i.e. by coating a well-dispersed alpha-alumina powder with a zirconium chloride aqueous solution. On thermal treatment, ultra-fine tetragonal zirconia grains were formed on the surface of the alumina particles. SEM observations and image analysis were used to characterize the microstructure of porous samples and uniaxial compressive tests were carried out to measure their mechanical behavior.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.jeurceramsoc.2013.01.038
