The effect of Cr2O3 addition on crystallization and properties of La2O3-containing diopside glass-ceramics

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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.

keywords

OXIDE FUEL-CELLS; DIFFERENTIAL THERMAL-ANALYSIS; ALBITE SYSTEM; SINTER-CRYSTALLIZATION; TRANSPORT-PROPERTIES; SILICATE-GLASSES; SEALANTS; BEHAVIOR; RAMAN; NUCLEATION

subject category

Materials Science; Metallurgy & Metallurgical Engineering

authors

Goel, A; Tulyaganov, DU; Kharton, VV; Yaremchenko, AA; Ferreira, JMF

our authors

foto Aleksey Yaremchenko

Aleksey Yaremchenko

Principal Researcher
foto José Maria da Fonte Ferreira

José Maria da Fonte Ferreira

Retired Professor
foto Vladislav Kharton

Vladislav Kharton

Invited Principal Researcher

Groups

G3 - Electrochemical Materials, Interfaces and Coatings
G5 - Biomimetic, Biological and Living Materials

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Publication Details

type
Journal Article
year
2008
journal
ACTA MATERIALIA
volume
56
publisher
PERGAMON-ELSEVIER SCIENCE LTD
issn
1359-6454
issue
13
digital object identifier
10.1016/j.actamat.2008.02.036
web of science article identifier
WOS:000257961100014

Journal Metrics (JCR 2019)

Journal Impact Factor
7.656
Journal Impact Factor (5 yrs)
7.826
category normalized journal percentile
93.075

Citations

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