Microstructure of Al2O3/Y3Al5O12 eutectic fibers grown by μ-PD method

B. M. Epelbaum, A. Yoshikawa, K. Shimamura, T. Fukuda, K. Suzuki, Y. Waku

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87 Citations (Scopus)

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 languageEnglish
Pages (from-to)471-475
Number of pages5
JournalJournal of Crystal Growth
Volume198-199
Issue numberPART I
DOIs
Publication statusPublished - 1999 Jan 1

Keywords

  • Eutectic
  • Fiber crystal
  • Melt
  • Micro pulling down method
  • Microstructure

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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