Alumina-based monofoams utilizing superplastic deformation facilitated by the addition of magnesia or magnesium aluminate spinel

Mako Obata; Hidetaka Hayashi; Akira Kishimoto

doi:10.1016/j.jallcom.2008.03.136

Alumina-based monofoams utilizing superplastic deformation facilitated by the addition of magnesia or magnesium aluminate spinel

Mako Obata, Hidetaka Hayashi, Akira Kishimoto

Research output: Contribution to journal › Letter

14 Citations (Scopus)

Abstract

Alumina-based ceramic foam utilizing the superplastic deformation after sintering has been proposed and demonstrated by the present authors. Effects of two kinds of additives, magnesia or magnesium aluminate spinel on the figure of alumina-based ceramic foams were examined. In both cases, total porosity increased with increasing the addition amount up to 30 mol%. With the same addition amount, the porosity of spinel-added foam was slightly larger than that of magnesia-added one. On pore expansion, relative density of pore shell decreased while the density degradation degree of magnesia-added foam was more serious than that of spinel-added one.

Original language	English
Pages (from-to)	L32-L35
Journal	Journal of Alloys and Compounds
Volume	471
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.03.136
Publication status	Published - Mar 5 2009

Keywords

Ceramics
Grain boundary
Oxide materials
Sintering
Spinel

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Obata, M., Hayashi, H., & Kishimoto, A. (2009). Alumina-based monofoams utilizing superplastic deformation facilitated by the addition of magnesia or magnesium aluminate spinel. Journal of Alloys and Compounds, 471(1-2), L32-L35. https://doi.org/10.1016/j.jallcom.2008.03.136

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