Abstract
The application of μ-PD method to fiber growth of Al2O3/Y3Al5O12 eutectic made possible to grow completely homogeneous, high-purity samples and to investigate the formation of eutectic microstructures under high solidification rates. Eutectic fibers of Al2O3/Y3Al5O12 0.25-1.5 mm in diameter and 500 mm in length free of grains, pores and cracks have been grown over a wide range of pulling rate 0.15-10.00 mm/min, using 4N purity starting materials. The development of characteristic eutectic microstructures in relation to pulling rate has been analyzed. Fine 'Chinese script' lamellae dispersion having interlamellar spacing less than 1 μm were completed throughout the entire cross-section of grown fibers with excellent reproducibility. The interlamellar spacing agrees with the inverse-square-root dependence on pulling rate according to λνp1/2 = constant = 10, where λhas the dimension μm and νp - μm/s.
Original language | English |
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Pages (from-to) | 471-475 |
Number of pages | 5 |
Journal | Journal of Crystal Growth |
Volume | 198-199 |
Issue number | PART I |
DOIs | |
Publication status | Published - 1999 |
Keywords
- Eutectic
- Fiber crystal
- Melt
- Micro pulling down method
- Microstructure
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry