Flame-spraying synthesis of aluminate glasses in the Al 2O 3-La 2O 3 system
Journal
Ceramics International
Journal Volume
38
Journal Issue
7
Pages
5543-5549
Date Issued
2012
Author(s)
Abstract
The paper deals with the synthesis and characterisation of binary aluminate glasses in the La 2O 3-Al 2O 3 system with Al 2O 3 contents changing between 74.6 and 86.9 mol% (48-65 wt.%), and of ternary glasses with 75.7 mol% Al 2O 3 doped with 1 mol% of Nd 2O 3 or Er 2O 3. Six binary and two ternary compositions were prepared. Flame synthesis facilitated the preparation of X-ray amorphous microspheres in the systems with 58 wt.% Al 2O 3, and with eutectic composition in the pseudobinary LaAlO 3-LaAl 11O 18 system doped with Er. Other systems contained low fractions of crystalline LaAlO 3 perovskite, regardless of the composition. The diameter of prepared microspheres ranged between 2 and 10 μm. They were transparent for visible light, as well as in the IR wavenumber range from 1300 to 4000 cm -1. © 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Type
journal article