Fabrication of alumina-based ceramic foams utilizing superplasticity

Akira Kishimoto; Mako Obata; Hiroshi Asaoka; Hidetaka Hayashi

doi:10.1016/j.jeurceramsoc.2006.03.002

Fabrication of alumina-based ceramic foams utilizing superplasticity

Akira Kishimoto, Mako Obata, Hiroshi Asaoka, Hidetaka Hayashi

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Model ceramic foams were fabricated by expanding once-sintered dense shells utilizing the superplastic deformation of alumina dispersed with 3 mol% yttria-stabilized zirconia (3YSZ) or magnesia. The grain growth of alumina was suppressed by adding 3YSZ and the resultant grain size and amount of dispersion were closely related to the total porosity. Total porosity of the ceramic foam depended on the grain size and their distributions irrespective of the size of starting powders.

Original language	English
Pages (from-to)	41-45
Number of pages	5
Journal	Journal of the European Ceramic Society
Volume	27
Issue number	1
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2006.03.002
Publication status	Published - Jan 1 2007

Keywords

AlO
Ceramics
Foams
Grain size
Insulators
Superplasticity

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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AU - Asaoka, Hiroshi

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AB - Model ceramic foams were fabricated by expanding once-sintered dense shells utilizing the superplastic deformation of alumina dispersed with 3 mol% yttria-stabilized zirconia (3YSZ) or magnesia. The grain growth of alumina was suppressed by adding 3YSZ and the resultant grain size and amount of dispersion were closely related to the total porosity. Total porosity of the ceramic foam depended on the grain size and their distributions irrespective of the size of starting powders.

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KW - Grain size

KW - Insulators

KW - Superplasticity

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