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Preparation and Characterization of Y3Al5O12 (YAG) from An Alkoxide-Derived Polymer

Published online by Cambridge University Press:  25 February 2011

Zhiping Jiang  and
Wendell E. Rhine
Zhiping Jiang
Affiliation:
Ceramics Processing Research Laboratory, Massachusetts Institute of Technology Cambridge, MA 02139
Wendell E. Rhine
Affiliation:
Ceramics Processing Research Laboratory, Massachusetts Institute of Technology Cambridge, MA 02139
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Abstract

The controlled hydrolysis of Al(O-sec-Bu)3 and Y(O-iso-Pr)3 or the reaction of Y(OOCCH)3 with partially hydrolyzed Al(O-sec-Bu)3 [AlO0.75(O-sec-Bu)1.5] resulted in the formation of soluble polymeric materials. Pyrolysis of these materials under a flow of oxygen led to the formation of yttrium aluminum garnet (YAG) at 650-1500°C. YAG was the only crystalline phase observed during pyrolysis, and the Al/Y ratio of the pyrolysis products and the starting material was identical. However, infrared spectroscopy indicated that carbonate groups and entrained CO2 existed in the products at temperatures up to 1250°C. The pyrolysis chemistry of the precursors and the microstructure of the products were studied by FT-IR, TGA, XRD, SEM and elemental analyses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992 , 21
Copyright
Copyright © Materials Research Society 1993

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References

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