Thermal Properties and Microstructural Characterization of Aluminium Titanate (Al2TiO5) / La2O3 -Stabilized Zirconia (ZrO2) Ceramics
Abstract
In this paper defined the productions and densification behaviour of 8
mole% Lanthana (Lanthanum oxide, La2O3)
-stabilized Zirconia (Zirconium Oxide, ZrO2) based composites fabricated by the conventional ceramic production
process. La2O3 stabilized
zirconia (LSZ, with mole 8% La2O3)
has excellent high temperature properties like low thermal conductivity,
mechanical properties, elevated melting point, high toleration for thermal
shock, superior oxidation resistance and well phase stability. Aluminium
titanate (Al2TiO5) low thermal conductivity coupled with
well chemical resistance in melted metals and exhibit extremely well thermal
shock resistance. In this study, Aluminium titanate / LSZ ceramic with
different proportions of Al2TiO5 was prepared by powder
metallurgy techniques. The mechanical, thermal and microstructural properties were characterized by XRD, SEM, hardness
and dilatometer. The thermal shock resistance performance under water quenching
of the as-prepared ceramics was also estimated. As a results shown that the
adding of aluminium titanate to LSZ matrix improves the properties of the
aluminium titanate / LSZ ceramics.
Keywords
Lanthanum oxide,stabilized zirconia,Aluminium Titanate,Characterization,Hardness,Thermal Properties
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