Enhanced densification of thin tape cast Ceria-Gadolinium Oxide (CGO) layers by rheological optimization of slurries

Debora Marani, Vincenzo Esposito, Bhaskar Reddy Sudireddy, Janet Jonna Bentzen, Peter Stanley Jørgensen, De Wei Ni, Francesca Teocoli, Wolff-Ragnar Kiebach

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Optimized CGO-based slurries are formulated and shaped into thin dense layers via a tape-casting process. The formulation is adjusted with respect to the rheological behaviour. The internal structure and flow properties of slurries are explored with the aim of identifying the required conditions to obtain thin dense CGO layers at reduced sintering temperatures (1200 °C). We demonstrate a correlation between the rheological properties of the slurries, the sintering behaviour and the microstructure of the resulting tapes. Remarkably, a dense CGO layer less than 20 μm thick is obtained with a non-congested slurry, having optimized ceramic loading and liquid-like behaviour.
Original languageEnglish
JournalCeramics International
Volume43
Issue number7
Pages (from-to)5647-5653
ISSN0272-8842
DOIs
Publication statusPublished - 2017

Keywords

  • Cerium-gadolinium oxide
  • Rheology
  • Thin dense layers
  • Tape casting
  • Sintering behaviour
  • Symmetric single-phase cells

Cite this

@article{878e88e3f7784c78a54055fbac712694,
title = "Enhanced densification of thin tape cast Ceria-Gadolinium Oxide (CGO) layers by rheological optimization of slurries",
abstract = "Optimized CGO-based slurries are formulated and shaped into thin dense layers via a tape-casting process. The formulation is adjusted with respect to the rheological behaviour. The internal structure and flow properties of slurries are explored with the aim of identifying the required conditions to obtain thin dense CGO layers at reduced sintering temperatures (1200 °C). We demonstrate a correlation between the rheological properties of the slurries, the sintering behaviour and the microstructure of the resulting tapes. Remarkably, a dense CGO layer less than 20 μm thick is obtained with a non-congested slurry, having optimized ceramic loading and liquid-like behaviour.",
keywords = "Cerium-gadolinium oxide, Rheology, Thin dense layers, Tape casting, Sintering behaviour, Symmetric single-phase cells",
author = "Debora Marani and Vincenzo Esposito and Sudireddy, {Bhaskar Reddy} and Bentzen, {Janet Jonna} and J{\o}rgensen, {Peter Stanley} and Ni, {De Wei} and Francesca Teocoli and Wolff-Ragnar Kiebach",
year = "2017",
doi = "10.1016/j.ceramint.2017.01.098",
language = "English",
volume = "43",
pages = "5647--5653",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Pergamon Press",
number = "7",

}

Enhanced densification of thin tape cast Ceria-Gadolinium Oxide (CGO) layers by rheological optimization of slurries. / Marani, Debora; Esposito, Vincenzo; Sudireddy, Bhaskar Reddy; Bentzen, Janet Jonna; Jørgensen, Peter Stanley; Ni, De Wei; Teocoli, Francesca; Kiebach, Wolff-Ragnar.

In: Ceramics International, Vol. 43, No. 7, 2017, p. 5647-5653.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Enhanced densification of thin tape cast Ceria-Gadolinium Oxide (CGO) layers by rheological optimization of slurries

AU - Marani, Debora

AU - Esposito, Vincenzo

AU - Sudireddy, Bhaskar Reddy

AU - Bentzen, Janet Jonna

AU - Jørgensen, Peter Stanley

AU - Ni, De Wei

AU - Teocoli, Francesca

AU - Kiebach, Wolff-Ragnar

PY - 2017

Y1 - 2017

N2 - Optimized CGO-based slurries are formulated and shaped into thin dense layers via a tape-casting process. The formulation is adjusted with respect to the rheological behaviour. The internal structure and flow properties of slurries are explored with the aim of identifying the required conditions to obtain thin dense CGO layers at reduced sintering temperatures (1200 °C). We demonstrate a correlation between the rheological properties of the slurries, the sintering behaviour and the microstructure of the resulting tapes. Remarkably, a dense CGO layer less than 20 μm thick is obtained with a non-congested slurry, having optimized ceramic loading and liquid-like behaviour.

AB - Optimized CGO-based slurries are formulated and shaped into thin dense layers via a tape-casting process. The formulation is adjusted with respect to the rheological behaviour. The internal structure and flow properties of slurries are explored with the aim of identifying the required conditions to obtain thin dense CGO layers at reduced sintering temperatures (1200 °C). We demonstrate a correlation between the rheological properties of the slurries, the sintering behaviour and the microstructure of the resulting tapes. Remarkably, a dense CGO layer less than 20 μm thick is obtained with a non-congested slurry, having optimized ceramic loading and liquid-like behaviour.

KW - Cerium-gadolinium oxide

KW - Rheology

KW - Thin dense layers

KW - Tape casting

KW - Sintering behaviour

KW - Symmetric single-phase cells

U2 - 10.1016/j.ceramint.2017.01.098

DO - 10.1016/j.ceramint.2017.01.098

M3 - Journal article

VL - 43

SP - 5647

EP - 5653

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 7

ER -