Consolidation of Al2O3-GdAlo3 eutectic powder prepared from induction-melted solid and strength at high temperatures

A eutectic powder of Al 2 0 3 -GdA10 3 was melted using a Mo crucible by induction heating. The melt was slowly solidified, resulting in a eutectic solid with coarse Al 2 0 3 and GdAl0 3 phases. The eutectic solid was ground and sieved into 3-44 µm and 64-124 µm particles. The powders were consolida...

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Published inScience and technology of advanced materials Vol. 3; no. 3; pp. 239 - 244
Main Authors Isobe, Toshinori, Omori, Mamoru, Uchida, Satoshi, Sato, Tsuguo, Hirai, Toshio
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.06.2002
Subjects
Consolidation of eutectic particles
Eutectic composite
GdAl0
Oxide eutectic composite
Spark plasma sintering
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Summary:A eutectic powder of Al 2 0 3 -GdA10 3 was melted using a Mo crucible by induction heating. The melt was slowly solidified, resulting in a eutectic solid with coarse Al 2 0 3 and GdAl0 3 phases. The eutectic solid was ground and sieved into 3-44 µm and 64-124 µm particles. The powders were consolidated to produce a eutectic composite by spark plasma sintering. Mechanical properties of the consolidated eutectic composite were measured at room temperature. High temperature strength was obtained at temperatures up to 1673 K. Superplastic deformation of the eutectic composite was not observed on stress-strain curves at 1673 K, but did occur in the case of a conventional composite at 1573 K.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1468-6996
1878-5514
DOI:10.1016/S1468-6996(00)00021-9