Xianxue Li, Wenju Wang
Dec 1, 2009
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Influential Citations
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Journal
Journal of Rare Earths
Abstract
Abstract Tetraethylenepentamine (C 8 H 23 N 5 , TEPA) has been used as a novel precipitant to synthesize yttrium aluminum garnet (Y 3 Al 5 O 12 , YAG) precursor from a mixed solution of aluminum and yttrium nitrates via a normal-strike co-precipitation method without controlling the pH value during precipitation process. The original precursor was analyzed by thermogravimetry/differential scanning calorimetry (TG/DSC). The evolution of phase composition and micro-structure of the as-synthesized YAG powders were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and transmission electron microscopy (TEM). Compositionally pure YAG nanostructured powders were directly obtained by calcination of the precursor at 900 °C without the formation of any intermediate phases. The average particle size determined from TEM micrograph for the powder obtained at 1000 °C was approximately 50 nm.