Mullite single crystal fibres produced by the internal crystallization method (ICM)

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • C. H. Rüscher
  • S. T. Mileiko
  • H. Schneider

Externe Organisationen

  • Russian Academy of Sciences (RAS)
  • Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)3113-3117
Seitenumfang5
FachzeitschriftJournal of the European Ceramic Society
Jahrgang23
Ausgabenummer16
Frühes Online-Datum10 Mai 2003
PublikationsstatusVeröffentlicht - Dez. 2003

Abstract

Optically clear, inclusion-free mullite fibers up to 80 mm in length and 80×70 μm2 in cross-section were grown from an alumino silicate melt by the internal crystallization method (ICM). Microprobe analysis reveals a high chemical homogeneity at 76.5±0.5 wt.% Al2O3 and 23.5±0.5 wt.% SiO2, which is close to the 2/1-mullite composition. Areas of slightly decreased Al2O3 content (≈74.5 wt.%) occur rarely, whereas areas of increased Al2 O3 content were not observed. Polarized infrared- reflection micro-spectroscopy using spot sizes of 60 μm diameter on sections cut parallel and perpendicular to the fiber axis show the single crystal character of the fibers. Optical microscopy shows that the fibers consist of a mosaic of single crystal areas up to about 5 mm in length. The c axis of the single crystal individuals are misalligned up to θ ≈±3° with respect to the fiber axis. These orientational misfits are believed to be the reason for the development of the mosaic type microstructure during the growth process.

ASJC Scopus Sachgebiete

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Mullite single crystal fibres produced by the internal crystallization method (ICM). / Rüscher, C. H.; Mileiko, S. T.; Schneider, H.
in: Journal of the European Ceramic Society, Jahrgang 23, Nr. 16, 12.2003, S. 3113-3117.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Rüscher CH, Mileiko ST, Schneider H. Mullite single crystal fibres produced by the internal crystallization method (ICM). Journal of the European Ceramic Society. 2003 Dez;23(16):3113-3117. Epub 2003 Mai 10. doi: 10.1016/S0955-2219(03)00118-3
Rüscher, C. H. ; Mileiko, S. T. ; Schneider, H. / Mullite single crystal fibres produced by the internal crystallization method (ICM). in: Journal of the European Ceramic Society. 2003 ; Jahrgang 23, Nr. 16. S. 3113-3117.
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abstract = "Optically clear, inclusion-free mullite fibers up to 80 mm in length and 80×70 μm2 in cross-section were grown from an alumino silicate melt by the internal crystallization method (ICM). Microprobe analysis reveals a high chemical homogeneity at 76.5±0.5 wt.% Al2O3 and 23.5±0.5 wt.% SiO2, which is close to the 2/1-mullite composition. Areas of slightly decreased Al2O3 content (≈74.5 wt.%) occur rarely, whereas areas of increased Al2 O3 content were not observed. Polarized infrared- reflection micro-spectroscopy using spot sizes of 60 μm diameter on sections cut parallel and perpendicular to the fiber axis show the single crystal character of the fibers. Optical microscopy shows that the fibers consist of a mosaic of single crystal areas up to about 5 mm in length. The c axis of the single crystal individuals are misalligned up to θ ≈±3° with respect to the fiber axis. These orientational misfits are believed to be the reason for the development of the mosaic type microstructure during the growth process.",
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Download

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T1 - Mullite single crystal fibres produced by the internal crystallization method (ICM)

AU - Rüscher, C. H.

AU - Mileiko, S. T.

AU - Schneider, H.

PY - 2003/12

Y1 - 2003/12

N2 - Optically clear, inclusion-free mullite fibers up to 80 mm in length and 80×70 μm2 in cross-section were grown from an alumino silicate melt by the internal crystallization method (ICM). Microprobe analysis reveals a high chemical homogeneity at 76.5±0.5 wt.% Al2O3 and 23.5±0.5 wt.% SiO2, which is close to the 2/1-mullite composition. Areas of slightly decreased Al2O3 content (≈74.5 wt.%) occur rarely, whereas areas of increased Al2 O3 content were not observed. Polarized infrared- reflection micro-spectroscopy using spot sizes of 60 μm diameter on sections cut parallel and perpendicular to the fiber axis show the single crystal character of the fibers. Optical microscopy shows that the fibers consist of a mosaic of single crystal areas up to about 5 mm in length. The c axis of the single crystal individuals are misalligned up to θ ≈±3° with respect to the fiber axis. These orientational misfits are believed to be the reason for the development of the mosaic type microstructure during the growth process.

AB - Optically clear, inclusion-free mullite fibers up to 80 mm in length and 80×70 μm2 in cross-section were grown from an alumino silicate melt by the internal crystallization method (ICM). Microprobe analysis reveals a high chemical homogeneity at 76.5±0.5 wt.% Al2O3 and 23.5±0.5 wt.% SiO2, which is close to the 2/1-mullite composition. Areas of slightly decreased Al2O3 content (≈74.5 wt.%) occur rarely, whereas areas of increased Al2 O3 content were not observed. Polarized infrared- reflection micro-spectroscopy using spot sizes of 60 μm diameter on sections cut parallel and perpendicular to the fiber axis show the single crystal character of the fibers. Optical microscopy shows that the fibers consist of a mosaic of single crystal areas up to about 5 mm in length. The c axis of the single crystal individuals are misalligned up to θ ≈±3° with respect to the fiber axis. These orientational misfits are believed to be the reason for the development of the mosaic type microstructure during the growth process.

KW - Crystals

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KW - Internal crystallisation method

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