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The crystallization of Gd2 3 -Al2O3 glasses

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Abstract

Glasses of Gd2O3 · x Al2O3 compositions where x represents 5/3, 4 and 6, were prepared using a rapid quenching apparatus and a laser beam. The crystallization process of the glasses was studied by means of differential thermal analysis (DTA), X-ray diffraction analysis and electron microscopy. The crystallizations of Gd2O3 · 5/3Al2O3, Gd2O3 · 4Al2O3 and Gd2O3 · 6Al2O3 are complex and exhibit one, two and three exothermic peaks in DTA measurement with increasing Al2O3 concentration, respectively. The crystallization process of Gd2O3 · 5/3Al2O3 glass involved the direct formation of the gadolinium aluminium garnet, 3Gd2O3 · 5l2 3 (GdAG), which is not obtained by the ordinary solid phase reaction. After crystallization of Gd2O3 · 4Al2O3 and Gd2O3 · l2 3 glass, both phases become a mixture of Gd2O3 · Al2O3 (perovskite type) and α-Al2O3.

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Authors and Affiliations

  1. The Oarai Branch, The Research Institute for Iron, Steel and Other Metals, Tohoku University, Oarai, 311-13, Ibaraki-ken, Japan

    Toetsu Shishido

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  1. Toetsu Shishido
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Shishido, T. The crystallization of Gd2 3 -Al2O3 glasses. J Mater Sci 14, 823–830 (1979). https://doi.org/10.1007/BF00550713

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  • DOI: https://doi.org/10.1007/BF00550713

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