Microstructure of Al2O3-Y3Al5O12(YAG) Eutectic Composite Prepared by Melting and SPS (特集 放電焼結の基礎と応用)
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概要
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Eutectic composites of Al<SUB>2</SUB>O<SUB>3</SUB>-Y<SUB>3</SUB>Al<SUB>5</SUB>O<SUB>12</SUB>(YAG) were prepared from solids melted by arc discharge and induction heating. Unidirectional solidification was carried out by the floating zone (FZ) method. The melt of the arc discharge was cooled rapidly and resulted in medium crystals. Coupled crystals (Al<SUB>2</SUB>O<SUB>3</SUB> and Y<SUB>3</SUB>Al<SUB>5</SUB>O<SUB>12</SUB>) resulting from induction heating and the FZ method were 20-30, um in width. The eutectic powder, which was prepared by grinding eutectic solids melted by arc discharge and induction heating, was consolidated by the spark plasma system (SPS). The structure of the consolidated was similar to that of a eutectic composite, and was coarsened by the growth of coupled crystals around original particles.
- 社団法人 粉体粉末冶金協会の論文
- 2000-03-15
著者
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Hirai T
Tohoku Univ. Sendai Jpn
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Hirai Toshio
Institute For Materals Research Tohoku University
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Omori Mamoru
Institute For Materials Research Tohoku University
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ISOBE Toshinori
Department of Materials Science, Graduate School of Engineering, Tohoku University
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Isobe Toshinori
Department Of Materials Science Graduate School Of Engineering Tohoku University
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