Synthesis and Thermal Characterization of Dysprosium Zirconate

Abstract:

Results of investigations related to synthesis and thermal properties analysis of the Dy₂Zr₂O₇ phase was presented in this article. This material was obtained during high temperature synthesis in an actual pressure of 15 MPa, in vacuum of 3×10^-6 MPa, and at 1350°C with 2 hours of exposure. Feedstock materials were submicrocrystalline powders of dysprosia Dy₂O₃ and zirconia ZrO₂. Both powders were mechanically blended in alcohol before the sintering process. The final product was analysed from the phase’s composition point of view. It was revealed that main constituent elements were dysprosium zirconate with an overall formula of Dy₂Zr₂O₇ and others were Dy zirconates with a non-stoichiometric character. The presence of zirconia was found with tetragonal types of unite cell. This fact evidences that partial dissolution of Dy₂O₃ in ZrO₂ took place. The obtained material was characterized by calorimetric investigations in the thermal range from 25 to 1450°C.

• Periodical: Solid State Phenomena (Volume 223)
• Pages: 54-61
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.223.54
• Online since: November 2014
• Authors: Marta Mikuśkiewicz, Michał Stopyra, Grzegorz Moskal*
• Keywords: Dysprosia, Dysprosium Zirconate, Solid-State Synthesis, Zirconia

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