Modeling sintering of multilayers under influence of gravity

Henrik Lund Frandsen, Eugene Olevsky, Tesfaye Tadesse Molla, Vincenzo Esposito, Rasmus Bjørk, Nini Pryds

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

There is a tendency for multiple functional ceramic layers used in various applications to have increasing surface areas and decreasing thicknesses. Sintering samples with such geometry is challenging, as differential shrinkage of the layers causes undesired distortions. In this work, a model, which describes the combined effect of sintering and gravity of thin multilayers, is derived and later compared with experimental results. It allows for consideration of both uniaxial and biaxial stress states. The model is based on the Skorohod-Olevsky viscous sintering framework, the classical laminate theory and the elastic-viscoelastic correspondence principle. The modeling approach is then applied to illustrate the effect of gravity during sintering of thin layers of cerium gadolinium oxide (CGO), and it is found to be significant. © 2012 The American Ceramic Society.
Original languageEnglish
JournalJournal of the American Ceramic Society
Volume96
Issue number1
Pages (from-to)80-89
ISSN0002-7820
DOIs
Publication statusPublished - 2013

Keywords

  • Cerium
  • Gadolinium
  • Sintering

Cite this

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title = "Modeling sintering of multilayers under influence of gravity",
abstract = "There is a tendency for multiple functional ceramic layers used in various applications to have increasing surface areas and decreasing thicknesses. Sintering samples with such geometry is challenging, as differential shrinkage of the layers causes undesired distortions. In this work, a model, which describes the combined effect of sintering and gravity of thin multilayers, is derived and later compared with experimental results. It allows for consideration of both uniaxial and biaxial stress states. The model is based on the Skorohod-Olevsky viscous sintering framework, the classical laminate theory and the elastic-viscoelastic correspondence principle. The modeling approach is then applied to illustrate the effect of gravity during sintering of thin layers of cerium gadolinium oxide (CGO), and it is found to be significant. {\circledC} 2012 The American Ceramic Society.",
keywords = "Cerium, Gadolinium, Sintering",
author = "Frandsen, {Henrik Lund} and Eugene Olevsky and {Tadesse Molla}, Tesfaye and Vincenzo Esposito and Rasmus Bj{\o}rk and Nini Pryds",
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journal = "Journal of the American Ceramic Society",
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Modeling sintering of multilayers under influence of gravity. / Frandsen, Henrik Lund; Olevsky, Eugene; Tadesse Molla, Tesfaye; Esposito, Vincenzo; Bjørk, Rasmus; Pryds, Nini.

In: Journal of the American Ceramic Society, Vol. 96, No. 1, 2013, p. 80-89.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Modeling sintering of multilayers under influence of gravity

AU - Frandsen, Henrik Lund

AU - Olevsky, Eugene

AU - Tadesse Molla, Tesfaye

AU - Esposito, Vincenzo

AU - Bjørk, Rasmus

AU - Pryds, Nini

PY - 2013

Y1 - 2013

N2 - There is a tendency for multiple functional ceramic layers used in various applications to have increasing surface areas and decreasing thicknesses. Sintering samples with such geometry is challenging, as differential shrinkage of the layers causes undesired distortions. In this work, a model, which describes the combined effect of sintering and gravity of thin multilayers, is derived and later compared with experimental results. It allows for consideration of both uniaxial and biaxial stress states. The model is based on the Skorohod-Olevsky viscous sintering framework, the classical laminate theory and the elastic-viscoelastic correspondence principle. The modeling approach is then applied to illustrate the effect of gravity during sintering of thin layers of cerium gadolinium oxide (CGO), and it is found to be significant. © 2012 The American Ceramic Society.

AB - There is a tendency for multiple functional ceramic layers used in various applications to have increasing surface areas and decreasing thicknesses. Sintering samples with such geometry is challenging, as differential shrinkage of the layers causes undesired distortions. In this work, a model, which describes the combined effect of sintering and gravity of thin multilayers, is derived and later compared with experimental results. It allows for consideration of both uniaxial and biaxial stress states. The model is based on the Skorohod-Olevsky viscous sintering framework, the classical laminate theory and the elastic-viscoelastic correspondence principle. The modeling approach is then applied to illustrate the effect of gravity during sintering of thin layers of cerium gadolinium oxide (CGO), and it is found to be significant. © 2012 The American Ceramic Society.

KW - Cerium

KW - Gadolinium

KW - Sintering

U2 - 10.1111/jace.12070

DO - 10.1111/jace.12070

M3 - Journal article

VL - 96

SP - 80

EP - 89

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 1

ER -