Effects of co-sintering in self-standing CGO/YSZ and CGO/ ScYSZ dense bi-layers

Research output: Contribution to journalJournal article – Annual report year: 2014Researchpeer-review

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Effects of co-sintering in self-standing CGO/YSZ and CGO/ ScYSZ dense bi-layers. / Teocoli, Francesca; Ni, De Wei; Brodersen, Karen; Foghmoes, Søren Preben Vagn; Ramousse, Severine; Esposito, Vincenzo.

In: Journal of Materials Science, Vol. 49, 2014, p. 5324–5333.

Research output: Contribution to journalJournal article – Annual report year: 2014Researchpeer-review

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@article{cfdeb9d2c0b3454db05d2ab73c353345,
title = "Effects of co-sintering in self-standing CGO/YSZ and CGO/ ScYSZ dense bi-layers",
abstract = "Viscoelastic properties and sintering mechanisms of tape-casted gadolinium-doped ceria (CGO), yttrium-stabilized zirconia (YSZ), and scandium–yttriumstabilized zirconia (ScYSZ) are characterized in order to investigate the reciprocal thermo-mechanical compatibility when arranged as a self-standing bi-layered electrolyte system. The combined use of thermo-mechanical analysis, optical dilatometry, and scanning electron microscopy ensures a systematic characterization of both the individual layers and CGO/YSZ and CGO/ScYSZ bi-layered laminates. The results of the co-firing process of the bi-layers are critical due to the mismatch of thermo-mechanical and sintering properties among the materials. Despite the better sinteractivity of ScYSZ, the self-standing CGO/ScYSZ bilayer presents more challenges in terms of densification compared with the CGO/YSZ bi-layer. In particular, above 1200 C, ScYSZ and CGO show residual porosity, and at higher sintering temperatures, above 1300 C, full densification is completely inhibited by constrained sintering phenomena.",
author = "Francesca Teocoli and Ni, {De Wei} and Karen Brodersen and Foghmoes, {S{\o}ren Preben Vagn} and Severine Ramousse and Vincenzo Esposito",
year = "2014",
doi = "10.1007/s10853-014-8235-y",
language = "English",
volume = "49",
pages = "5324–5333",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer New York",

}

RIS

TY - JOUR

T1 - Effects of co-sintering in self-standing CGO/YSZ and CGO/ ScYSZ dense bi-layers

AU - Teocoli, Francesca

AU - Ni, De Wei

AU - Brodersen, Karen

AU - Foghmoes, Søren Preben Vagn

AU - Ramousse, Severine

AU - Esposito, Vincenzo

PY - 2014

Y1 - 2014

N2 - Viscoelastic properties and sintering mechanisms of tape-casted gadolinium-doped ceria (CGO), yttrium-stabilized zirconia (YSZ), and scandium–yttriumstabilized zirconia (ScYSZ) are characterized in order to investigate the reciprocal thermo-mechanical compatibility when arranged as a self-standing bi-layered electrolyte system. The combined use of thermo-mechanical analysis, optical dilatometry, and scanning electron microscopy ensures a systematic characterization of both the individual layers and CGO/YSZ and CGO/ScYSZ bi-layered laminates. The results of the co-firing process of the bi-layers are critical due to the mismatch of thermo-mechanical and sintering properties among the materials. Despite the better sinteractivity of ScYSZ, the self-standing CGO/ScYSZ bilayer presents more challenges in terms of densification compared with the CGO/YSZ bi-layer. In particular, above 1200 C, ScYSZ and CGO show residual porosity, and at higher sintering temperatures, above 1300 C, full densification is completely inhibited by constrained sintering phenomena.

AB - Viscoelastic properties and sintering mechanisms of tape-casted gadolinium-doped ceria (CGO), yttrium-stabilized zirconia (YSZ), and scandium–yttriumstabilized zirconia (ScYSZ) are characterized in order to investigate the reciprocal thermo-mechanical compatibility when arranged as a self-standing bi-layered electrolyte system. The combined use of thermo-mechanical analysis, optical dilatometry, and scanning electron microscopy ensures a systematic characterization of both the individual layers and CGO/YSZ and CGO/ScYSZ bi-layered laminates. The results of the co-firing process of the bi-layers are critical due to the mismatch of thermo-mechanical and sintering properties among the materials. Despite the better sinteractivity of ScYSZ, the self-standing CGO/ScYSZ bilayer presents more challenges in terms of densification compared with the CGO/YSZ bi-layer. In particular, above 1200 C, ScYSZ and CGO show residual porosity, and at higher sintering temperatures, above 1300 C, full densification is completely inhibited by constrained sintering phenomena.

U2 - 10.1007/s10853-014-8235-y

DO - 10.1007/s10853-014-8235-y

M3 - Journal article

VL - 49

SP - 5324

EP - 5333

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

ER -