Preparation of polycrystalline YAG/alumina composite fibers and YAG fiber by sol–gel method

Polycrystalline yttrium–aluminum garnet, Y 3Al 5O 12 (YAG) fiber and α-alumina and YAG matrix composite fiber were prepared by the sol–gel method. α-Alumina and YAG matrix composite fiber with fine and homogeneous microstructure could be successfully fabricated by interpenetrating YAG in alumina mat...

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Veröffentlicht in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2001-01, Vol.32 (8), p.1127-1131
Hauptverfasser: Towata, A, Hwang, H.J, Yasuoka, M, Sando, M, Niihara, K
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container_end_page 1131
container_issue 8
container_start_page 1127
container_title Composites. Part A, Applied science and manufacturing
container_volume 32
creator Towata, A
Hwang, H.J
Yasuoka, M
Sando, M
Niihara, K
description Polycrystalline yttrium–aluminum garnet, Y 3Al 5O 12 (YAG) fiber and α-alumina and YAG matrix composite fiber were prepared by the sol–gel method. α-Alumina and YAG matrix composite fiber with fine and homogeneous microstructure could be successfully fabricated by interpenetrating YAG in alumina matrix and adding α-alumina of seed particles to fibers. Effect of α-alumina seed particles and YAG on crystallization and microstructure of composite fiber were discussed. The size of alumina matrix of the composite fibers heated at 1600°C for 4 h was below 2 μm. The tensile of strength alumina fiber heat-treated at 1500°C was 0.2 GPa, while that of the composite fiber was 1.1 GPa.
doi_str_mv 10.1016/S1359-835X(01)00014-8
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source ScienceDirect Journals (5 years ago - present)
subjects A. Ceramic fibre
Alumina
Applied sciences
Building materials. Ceramics. Glasses
Ceramic and carbon fibers
Ceramic industries
Chemical industry and chemicals
D. Thermal analysis
E. Powder processing
Exact sciences and technology
Technical ceramics
title Preparation of polycrystalline YAG/alumina composite fibers and YAG fiber by sol–gel method
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