Details
| Original language | English |
|---|---|
| Pages (from-to) | 3113-3117 |
| Number of pages | 5 |
| Journal | Journal of the European Ceramic Society |
| Volume | 23 |
| Issue number | 16 |
| Early online date | 10 May 2003 |
| Publication status | Published - Dec 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.
Keywords
- Crystals, Fibres, Internal crystallisation method, Mullite
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Materials Chemistry
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In: Journal of the European Ceramic Society, Vol. 23, No. 16, 12.2003, p. 3113-3117.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
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
KW - Fibres
KW - Internal crystallisation method
KW - Mullite
UR - http://www.scopus.com/inward/record.url?scp=0141573478&partnerID=8YFLogxK
U2 - 10.1016/S0955-2219(03)00118-3
DO - 10.1016/S0955-2219(03)00118-3
M3 - Article
AN - SCOPUS:0141573478
VL - 23
SP - 3113
EP - 3117
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 16
ER -