Detail publikačního výsledku

Sintering of Ce3+ -doped yttria nanoparticles prepared by precipitation method

Govindan, NP.; Najafzadehkhoee, A.; Talimian, A.; Pouchly, V.; Michálková, M.; Svancárek, P.; Klement, R.; Galusek, D.

Originální název

Sintering of Ce3+ -doped yttria nanoparticles prepared by precipitation method

Anglický název

Sintering of Ce3+ -doped yttria nanoparticles prepared by precipitation method

Druh

Článek WoS

Originální abstrakt

Cerium doped yttrium oxide nanoparticles with various Ce3+ concentrations between 0.001 and 0.010 at% have been synthesised by precipitation method using ammonium hydroxide as a precipitation agent. The synthesised powders are characterised by a mean particle size of ca. 55 nm. Highly dense specimens, with a relative density>98.8%, were obtained by sintering the green compacts shaped by pressure filtration, at 1550 degree celsius for 3 h in air. The sintering behaviour of Ce3+ doped Y2O3 was studied by constructing Master Sintering Curves (MSC); the results showed that the apparent activation energy of sintering for Ce3+ doped Y2O3 increases with the increase of cerium concentration. The segregation of larger Ce3+ cations in the grain boundaries is likely to be responsible for the increase in the sintering activation energy.

Anglický abstrakt

Cerium doped yttrium oxide nanoparticles with various Ce3+ concentrations between 0.001 and 0.010 at% have been synthesised by precipitation method using ammonium hydroxide as a precipitation agent. The synthesised powders are characterised by a mean particle size of ca. 55 nm. Highly dense specimens, with a relative density>98.8%, were obtained by sintering the green compacts shaped by pressure filtration, at 1550 degree celsius for 3 h in air. The sintering behaviour of Ce3+ doped Y2O3 was studied by constructing Master Sintering Curves (MSC); the results showed that the apparent activation energy of sintering for Ce3+ doped Y2O3 increases with the increase of cerium concentration. The segregation of larger Ce3+ cations in the grain boundaries is likely to be responsible for the increase in the sintering activation energy.

Klíčová slova

Y2O3; Sintering; Master sintering curve; EBSD

Klíčová slova v angličtině

Y2O3; Sintering; Master sintering curve; EBSD

Autoři

Govindan, NP.; Najafzadehkhoee, A.; Talimian, A.; Pouchly, V.; Michálková, M.; Svancárek, P.; Klement, R.; Galusek, D.

Rok RIV

2024

Vydáno

01.03.2023

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

2666-5395

Periodikum

Open Ceramics

Svazek

13

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

7

URL

https://www.sciencedirect.com/science/article/pii/S2666539522000980?via%3Dihub

BibTex

@article{BUT187375,
  author="Govindan, NP. and Najafzadehkhoee, A. and Talimian, A. and Pouchly, V. and Michálková, M. and Svancárek, P. and Klement, R. and Galusek, D.",
  title="Sintering of Ce3+ -doped yttria nanoparticles prepared by precipitation method",
  journal="Open Ceramics",
  year="2023",
  volume="13",
  number="1",
  pages="7",
  doi="10.1016/j.oceram.2022.100315",
  url="https://www.sciencedirect.com/science/article/pii/S2666539522000980?via%3Dihub"
}