The effect of Cr2O3 addition on crystallization and properties of La2O3-containing diopside glass-ceramics
authors Goel, A; Tulyaganov, DU; Kharton, VV; Yaremchenko, AA; Ferreira, JMF
nationality International
journal ACTA MATERIALIA
author keywords non-metallic glasses (silicates); sintering; crystallization; fuel cell materials; electrical resistivity/conductivity
keywords OXIDE FUEL-CELLS; DIFFERENTIAL THERMAL-ANALYSIS; ALBITE SYSTEM; SINTER-CRYSTALLIZATION; TRANSPORT-PROPERTIES; SILICATE-GLASSES; SEALANTS; BEHAVIOR; RAMAN; NUCLEATION
abstract We report on the effect of La2O3 and Cr2O3 on the structural, thermal and crystallization behavior of diopside-based glasses and on the processing, microstructure and properties of the sintered glass-ceramics (GCs). The structural features and thermal behavior of the glasses were investigated by Fourier transform infrared spectroscopy, density measurements, dilatometry and differential thermal analysis. The sintering, crystallization, microstructure and properties of the GCs were investigated under different heat treatment conditions (800-1000 degrees C; 1-300 h). The good matching of thermal expansion coefficients and the strong, but not reactive, adhesion to yttria-stabilized zirconia and Crofer 22 APU alloy, in conjunction with a low level of electrical conductivity, indicates that the investigated GCs are suitable candidates for further experimentation as solid oxide fuel cell sealants. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 1359-6454
year published 2008
volume 56
issue 13
beginning page 3065
ending page 3076
digital object identifier (doi) 10.1016/j.actamat.2008.02.036
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000257961100014
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journal impact factor 6.036
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