Promoting densification and grain growth of BaCe0.65Zr0.2Y0.15O3-δ

Wenyu Zhou; Fanlin Zeng; Jürgen Malzbender; Hartmut Schlenz; Wendelin Deibert; Dmitry Sergeev; Ivan Povstugar; Ruth Schwaiger; Arian Nijmeijer; Michael Müller; Olivier Guillon; Wilhelm Albert Meulenberg

doi:10.1016/j.jmrt.2023.10.180

Promoting densification and grain growth of BaCe_0.65Zr_0.2Y_0.15O_3-δ

Wenyu Zhou^*, Fanlin Zeng^*, Jürgen Malzbender, Hartmut Schlenz, Wendelin Deibert, Dmitry Sergeev, Ivan Povstugar, Ruth Schwaiger, Arian Nijmeijer, Michael Müller, Olivier Guillon, Wilhelm Albert Meulenberg

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

BaCe_0.65Zr_0.2Y_0.15O_3-δ (BCZ20Y15) has raised great interest due to its good protonic conductivity and chemical stability. However, the sintering of the material is considerably challenged by its refractory nature. In the current work, almost fully densified single-phase BCZ20Y15 with grain sizes exceeding 10 μm was successfully fabricated by sintering at 1500 °C by using calcined powders consisting of naturally separated perovskite phases and 0.5 wt% NiO. The role of NiO as sintering aid was elucidated by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Atom Probe Tomography (APT) methods, concerning global and local material composition. Furthermore, the mechanism leading to the promoted densification and grain growth is elucidated based on current experimental results and a comprehensive review of the literature.

Original language	English
Pages (from-to)	3531-3538
Number of pages	8
Journal	Journal of Materials Research and Technology
Volume	27
Early online date	20 Oct 2023
DOIs	https://doi.org/10.1016/j.jmrt.2023.10.180
Publication status	Published - 1 Nov 2023

Keywords

UT-Gold-D
Grain growth
NiO additive
Perovskite
Proton conductor
Sintering
Densification

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Promoting densificationFinal published version, 171 KBLicence: CC BY-NC-ND

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title = "Promoting densification and grain growth of BaCe0.65Zr0.2Y0.15O3-δ",

abstract = "BaCe0.65Zr0.2Y0.15O3-δ (BCZ20Y15) has raised great interest due to its good protonic conductivity and chemical stability. However, the sintering of the material is considerably challenged by its refractory nature. In the current work, almost fully densified single-phase BCZ20Y15 with grain sizes exceeding 10 μm was successfully fabricated by sintering at 1500 °C by using calcined powders consisting of naturally separated perovskite phases and 0.5 wt% NiO. The role of NiO as sintering aid was elucidated by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Atom Probe Tomography (APT) methods, concerning global and local material composition. Furthermore, the mechanism leading to the promoted densification and grain growth is elucidated based on current experimental results and a comprehensive review of the literature.",

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doi = "10.1016/j.jmrt.2023.10.180",

language = "English",

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T1 - Promoting densification and grain growth of BaCe0.65Zr0.2Y0.15O3-δ

AU - Zhou, Wenyu

AU - Zeng, Fanlin

AU - Malzbender, Jürgen

AU - Schlenz, Hartmut

AU - Deibert, Wendelin

AU - Sergeev, Dmitry

AU - Povstugar, Ivan

AU - Schwaiger, Ruth

AU - Nijmeijer, Arian

AU - Müller, Michael

AU - Guillon, Olivier

AU - Meulenberg, Wilhelm Albert

N1 - Publisher Copyright: © The Authors

PY - 2023/11/1

Y1 - 2023/11/1

N2 - BaCe0.65Zr0.2Y0.15O3-δ (BCZ20Y15) has raised great interest due to its good protonic conductivity and chemical stability. However, the sintering of the material is considerably challenged by its refractory nature. In the current work, almost fully densified single-phase BCZ20Y15 with grain sizes exceeding 10 μm was successfully fabricated by sintering at 1500 °C by using calcined powders consisting of naturally separated perovskite phases and 0.5 wt% NiO. The role of NiO as sintering aid was elucidated by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Atom Probe Tomography (APT) methods, concerning global and local material composition. Furthermore, the mechanism leading to the promoted densification and grain growth is elucidated based on current experimental results and a comprehensive review of the literature.

AB - BaCe0.65Zr0.2Y0.15O3-δ (BCZ20Y15) has raised great interest due to its good protonic conductivity and chemical stability. However, the sintering of the material is considerably challenged by its refractory nature. In the current work, almost fully densified single-phase BCZ20Y15 with grain sizes exceeding 10 μm was successfully fabricated by sintering at 1500 °C by using calcined powders consisting of naturally separated perovskite phases and 0.5 wt% NiO. The role of NiO as sintering aid was elucidated by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Atom Probe Tomography (APT) methods, concerning global and local material composition. Furthermore, the mechanism leading to the promoted densification and grain growth is elucidated based on current experimental results and a comprehensive review of the literature.

KW - UT-Gold-D

KW - Grain growth

KW - NiO additive

KW - Perovskite

KW - Proton conductor

KW - Sintering

KW - Densification

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DO - 10.1016/j.jmrt.2023.10.180

M3 - Article

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SN - 2238-7854

VL - 27

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EP - 3538

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Promoting densification and grain growth of BaCe_0.65Zr_0.2Y_0.15O_3-δ

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