Microstructures in oxide eutectic fibers grown by a modified micro-pulling-down method

Akira Yoshikawa, Boris M. Epelbaum, Kenji Hasegawa, Stephen D. Durbin, Tsuguo Fukuda

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)


The micro-pulling-down method has been adapted to grow fibers with diameters as small as 150 μm. We describe the use of this method to grow fibers of the oxide eutectic materials Al2O3/Y3Al5O12 and Al2O3/GdAlO3, which have exceptional mechanical properties at high temperature. The 'Chinese script' microstructure of Al2O3/Y3Al5O12 is stable and uniform, and varies with the pulling rate in the same way as the conventional lamellar eutectics. The microstructure of Al2O3/GdAlO3 is finer, but less stable and homogeneous, particularly at high pulling rate. Fibers produced at low growth rate exhibited self-cladding by the sapphire phase.

Original languageEnglish
Pages (from-to)305-316
Number of pages12
JournalJournal of Crystal Growth
Issue number3
Publication statusPublished - 1999 Sept


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