Thermophysical Properties of (Sm_1-xNd_x)₂Ce₂O₇ Ceramic Oxides

Abstract:

(Sm_1-xNd_x)₂Ce₂O₇ ceramics was synthesized by solid reaction method at 1873K for 10h in the present investigation. The density, phase structure, thermal conductivity and thermal expansion coefficient of (Sm_1-xNd_x)₂Ce₂O₇ ceramics were studied by the Archimedes method, X-ray diffraction (XRD), laser-flash and pushing rod. The (Sm_1-xNd_x)₂Ce₂O₇ ceramics have pure fluorite-structure. The thermal conductivity of (Sm_1-xNd_x)₂Ce₂O₇ ceramics decreased with an increase of Nd₂O₃ content at identical temperature conditions, and the thermal expansion coefficient increased with increasing Nd-doping content. The synthesized (Sm_1-xNd_x)₂Ce₂O₇ ceramics can be explored as an ideal candidate material for future thermal barrier coatings.

• Periodical: Materials Science Forum (Volume 816)
• Pages: 271-276
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.816.271
• Online since: April 2015
• Authors: Xiao Ge Chen, Yuan Wei, Xian Ping Zhang, Hong Song Zhang
• Keywords: Ceramic, Phase Structure, Thermal Conductivity, Thermal Expansion Coefficient

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