Undercooled Melt Shaping of Al2O3-YAG Eutectic Composite by Melting the Al2O3-YAP Eutectic Structure

Undercooled Melt Shaping of Al2O3-YAG Eutectic Composite by Melting the Al2O3-YAP Eutectic Structure

There are two eutectic systems in the Al2O3-Y2O, system: one is the Al2O3-YAG equilibrium eutectic system and the other is the Al2O3-YAP metastable eutectic system. Heating the Al2O3-YAP metastable eutectic structure up to temperatures above the metastable eutectic temperature but below the equilibr...

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Veröffentlicht in:Materials science forum 2005-01, Vol.475-479, p.2709-2712
Hauptverfasser: Ohnaka, Itsuo, Sakimura, Takumi, Yasuda, Hideyuki, Waku, Yoshiharu, Kawaguchi, Asako, Mizutani, Yoshiki, Sugiyama, Akira
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container_start_page 2709
container_title Materials science forum
container_volume 475-479
creator Ohnaka, Itsuo
Sakimura, Takumi
Yasuda, Hideyuki
Waku, Yoshiharu
Kawaguchi, Asako
Mizutani, Yoshiki
Sugiyama, Akira
description There are two eutectic systems in the Al2O3-Y2O, system: one is the Al2O3-YAG equilibrium eutectic system and the other is the Al2O3-YAP metastable eutectic system. Heating the Al2O3-YAP metastable eutectic structure up to temperatures above the metastable eutectic temperature but below the equilibrium eutectic temperature produced the undercooled melt. Solidification in the equilibrium path immediately followed the undercooled melt formation. The solidification in the equilibrium path along with the melting of the metastable eutectic structure resulted in a fine and uniform equilibrium eutectic structure. This paper demonstrates the shape casting by using the undercooled melt formation.
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title Undercooled Melt Shaping of Al2O3-YAG Eutectic Composite by Melting the Al2O3-YAP Eutectic Structure
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