Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics
Authorized Users Only
2020
Authors
Matović, BrankoMaletaškić, Jelena
Zagorac, Jelena B.
Pavkov, Vladimir
Maki, Ryosuke S.S.
Yoshida, Katsumi
Yano, Toyohiko
Article (Published version)
,
© 2019 Elsevier Ltd
Metadata
Show full item recordAbstract
Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composi...tion on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd
Keywords:
Pyrochlore / Synthesis / Microstructure / Sintering / Thermal conductivitySource:
Journal of the European Ceramic Society, 2020, 40, 7, 2652-2657Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology
DOI: 10.1016/j.jeurceramsoc.2019.11.012
ISSN: 0955-2219
WoS: 000523618300018
Scopus: 2-s2.0-85075896138
Collections
Institution/Community
VinčaTY - JOUR AU - Matović, Branko AU - Maletaškić, Jelena AU - Zagorac, Jelena B. AU - Pavkov, Vladimir AU - Maki, Ryosuke S.S. AU - Yoshida, Katsumi AU - Yano, Toyohiko PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8668 AB - Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd T2 - Journal of the European Ceramic Society T1 - Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics VL - 40 IS - 7 SP - 2652 EP - 2657 DO - 10.1016/j.jeurceramsoc.2019.11.012 ER -
@article{ author = "Matović, Branko and Maletaškić, Jelena and Zagorac, Jelena B. and Pavkov, Vladimir and Maki, Ryosuke S.S. and Yoshida, Katsumi and Yano, Toyohiko", year = "2020", abstract = "Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd", journal = "Journal of the European Ceramic Society", title = "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics", volume = "40", number = "7", pages = "2652-2657", doi = "10.1016/j.jeurceramsoc.2019.11.012" }
Matović, B., Maletaškić, J., Zagorac, J. B., Pavkov, V., Maki, R. S.S., Yoshida, K.,& Yano, T.. (2020). Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society, 40(7), 2652-2657. https://doi.org/10.1016/j.jeurceramsoc.2019.11.012
Matović B, Maletaškić J, Zagorac JB, Pavkov V, Maki RS, Yoshida K, Yano T. Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society. 2020;40(7):2652-2657. doi:10.1016/j.jeurceramsoc.2019.11.012 .
Matović, Branko, Maletaškić, Jelena, Zagorac, Jelena B., Pavkov, Vladimir, Maki, Ryosuke S.S., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics" in Journal of the European Ceramic Society, 40, no. 7 (2020):2652-2657, https://doi.org/10.1016/j.jeurceramsoc.2019.11.012 . .