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Journal of Materials Science

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01-06-2007

Al₂O₃/GdAlO₃ eutectic fibers of high modulus of rupture produced by the laser heated pedestal growth technique

Authors: Igor Studart Medeiros, Erika R. M. Andreeta, Antonio C. Hernandes

Published in: Journal of Materials Science | Issue 11/2007

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Abstract

Eutectic Al₂O₃/GdAlO₃ composites in the form of fibers were produced by the laser heated pedestal growth technique at high pulling rates ranging from 48 to 240 mm/h. Fibers 0.8 mm in diameter and 25 mm in length, devoid of pores or cracks, were pulled in an air atmosphere without seeding or pedestal rotation. “Chinese script” and complex-regular microstructures were present in all the fibers. The Jackson–Hunt relationship, λ² v = constant, applied very well to the eutectic Al₂O₃/GdAlO₃ fibers. The modulus of rupture values varied from 800 to 1,780 MPa. The effects of high pulling rate, average phase spacing and modulus of rupture on the microstructure were studied.

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Title: Al2O3/GdAlO3 eutectic fibers of high modulus of rupture produced by the laser heated pedestal growth technique
Authors: Igor Studart Medeiros
Erika R. M. Andreeta
Antonio C. Hernandes
Publication date: 01-06-2007
Publisher: Kluwer Academic Publishers-Plenum Publishers
Published in: Journal of Materials Science / Issue 11/2007
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-006-0466-0

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