ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00550713
