Preparation of alumina ceramics with uniformly dispersed micropores

Tomoo Nagatome; Naoya Enomoto; Chii Shyang Hwang; Zenbe e. Nakagawa

Preparation of alumina ceramics with uniformly dispersed micropores

Tomoo Nagatome, Naoya Enomoto, Chii Shyang Hwang, Zenbe e. Nakagawa

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

Abstract

Submicron micropores were uniformly dispersed in an alumina ceramic matrix by using the volume shrinkage accompanied by the decomposition of aluminum titanate (AT) into corundum and rutile. The methodology for the fabrication of the pore-dispersed alumina includes (1) homogeneous mixing of 2-8 wt%TiO₂ with alumina, (2) densification of AT-dispersed alumina, and (3) decomposition of AT into corundum and rutile with the formation of micropores. Such micropores are considered to release the residual thermal strain and to deflect cracks propagating in the alumina matrix.

Original language	English
Pages (from-to)	147-151
Number of pages	5
Journal	Journal of the Ceramic Society of Japan. International ed.
Volume	102
Issue number	2
Publication status	Published - Feb 1 1994

All Science Journal Classification (ASJC) codes

Engineering(all)

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author = "Tomoo Nagatome and Naoya Enomoto and Hwang, {Chii Shyang} and Nakagawa, {Zenbe e.}",

year = "1994",

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AU - Nagatome, Tomoo

AU - Enomoto, Naoya

AU - Hwang, Chii Shyang

AU - Nakagawa, Zenbe e.

PY - 1994/2/1

Y1 - 1994/2/1

N2 - Submicron micropores were uniformly dispersed in an alumina ceramic matrix by using the volume shrinkage accompanied by the decomposition of aluminum titanate (AT) into corundum and rutile. The methodology for the fabrication of the pore-dispersed alumina includes (1) homogeneous mixing of 2-8 wt%TiO2 with alumina, (2) densification of AT-dispersed alumina, and (3) decomposition of AT into corundum and rutile with the formation of micropores. Such micropores are considered to release the residual thermal strain and to deflect cracks propagating in the alumina matrix.

AB - Submicron micropores were uniformly dispersed in an alumina ceramic matrix by using the volume shrinkage accompanied by the decomposition of aluminum titanate (AT) into corundum and rutile. The methodology for the fabrication of the pore-dispersed alumina includes (1) homogeneous mixing of 2-8 wt%TiO2 with alumina, (2) densification of AT-dispersed alumina, and (3) decomposition of AT into corundum and rutile with the formation of micropores. Such micropores are considered to release the residual thermal strain and to deflect cracks propagating in the alumina matrix.

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Preparation of alumina ceramics with uniformly dispersed micropores

Abstract

All Science Journal Classification (ASJC) codes

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