Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body

Francesca Teocoli, Vincenzo Esposito, De Wei Ni, Karen Brodersen, Severine Ramousse

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

Sintering of ceramic materials is a critical process, especially when the components are shaped as multilayer. Microstructural changes and stresses take place in ceramics as single layer from the green stage to the densification stage, leading to shape distortion, delamination and cracks. The characterization of thermo-mechanical properties, such as viscoelasticity, enables a prediction of microstructural stability of SOFCs. Tape-cast bi-layer structures for CGO/YSZ and CGO/ScYSZ was studied during the thermal processing. Different sintering kinetics of bi-layer tape give rise to localized tensile stresses, which develop a camber in the final sintered body. To analyze the phenomena, shrinkage of SOFC components single layers and camber development of bi-layers were measured in-situ by optical dilatometry. In addition, a thoughtful investigation of the viscoelastic properties of individual layers was carried out by thermo-mechanical analysis (TMA). The results from the different techniques were found complementary and viscous behavior of the layered ceramics was verified.
Original languageEnglish
Publication date2013
Number of pages1
Publication statusPublished - 2013
Event10th Pacific Rim Conference on Ceramic and Glass Technology - Coronado Island, San Diego, CA, United States
Duration: 2 Jun 20137 Jun 2013
Conference number: 10

Conference

Conference10th Pacific Rim Conference on Ceramic and Glass Technology
Number10
LocationCoronado Island
CountryUnited States
CitySan Diego, CA
Period02/06/201307/06/2013

Cite this

Teocoli, F., Esposito, V., Ni, D. W., Brodersen, K., & Ramousse, S. (2013). Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body. Abstract from 10th Pacific Rim Conference on Ceramic and Glass Technology, San Diego, CA, United States.
Teocoli, Francesca ; Esposito, Vincenzo ; Ni, De Wei ; Brodersen, Karen ; Ramousse, Severine. / Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body. Abstract from 10th Pacific Rim Conference on Ceramic and Glass Technology, San Diego, CA, United States.1 p.
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title = "Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body",
abstract = "Sintering of ceramic materials is a critical process, especially when the components are shaped as multilayer. Microstructural changes and stresses take place in ceramics as single layer from the green stage to the densification stage, leading to shape distortion, delamination and cracks. The characterization of thermo-mechanical properties, such as viscoelasticity, enables a prediction of microstructural stability of SOFCs. Tape-cast bi-layer structures for CGO/YSZ and CGO/ScYSZ was studied during the thermal processing. Different sintering kinetics of bi-layer tape give rise to localized tensile stresses, which develop a camber in the final sintered body. To analyze the phenomena, shrinkage of SOFC components single layers and camber development of bi-layers were measured in-situ by optical dilatometry. In addition, a thoughtful investigation of the viscoelastic properties of individual layers was carried out by thermo-mechanical analysis (TMA). The results from the different techniques were found complementary and viscous behavior of the layered ceramics was verified.",
author = "Francesca Teocoli and Vincenzo Esposito and Ni, {De Wei} and Karen Brodersen and Severine Ramousse",
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Teocoli, F, Esposito, V, Ni, DW, Brodersen, K & Ramousse, S 2013, 'Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body', 10th Pacific Rim Conference on Ceramic and Glass Technology, San Diego, CA, United States, 02/06/2013 - 07/06/2013.

Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body. / Teocoli, Francesca; Esposito, Vincenzo; Ni, De Wei; Brodersen, Karen; Ramousse, Severine.

2013. Abstract from 10th Pacific Rim Conference on Ceramic and Glass Technology, San Diego, CA, United States.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

TY - ABST

T1 - Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body

AU - Teocoli, Francesca

AU - Esposito, Vincenzo

AU - Ni, De Wei

AU - Brodersen, Karen

AU - Ramousse, Severine

PY - 2013

Y1 - 2013

N2 - Sintering of ceramic materials is a critical process, especially when the components are shaped as multilayer. Microstructural changes and stresses take place in ceramics as single layer from the green stage to the densification stage, leading to shape distortion, delamination and cracks. The characterization of thermo-mechanical properties, such as viscoelasticity, enables a prediction of microstructural stability of SOFCs. Tape-cast bi-layer structures for CGO/YSZ and CGO/ScYSZ was studied during the thermal processing. Different sintering kinetics of bi-layer tape give rise to localized tensile stresses, which develop a camber in the final sintered body. To analyze the phenomena, shrinkage of SOFC components single layers and camber development of bi-layers were measured in-situ by optical dilatometry. In addition, a thoughtful investigation of the viscoelastic properties of individual layers was carried out by thermo-mechanical analysis (TMA). The results from the different techniques were found complementary and viscous behavior of the layered ceramics was verified.

AB - Sintering of ceramic materials is a critical process, especially when the components are shaped as multilayer. Microstructural changes and stresses take place in ceramics as single layer from the green stage to the densification stage, leading to shape distortion, delamination and cracks. The characterization of thermo-mechanical properties, such as viscoelasticity, enables a prediction of microstructural stability of SOFCs. Tape-cast bi-layer structures for CGO/YSZ and CGO/ScYSZ was studied during the thermal processing. Different sintering kinetics of bi-layer tape give rise to localized tensile stresses, which develop a camber in the final sintered body. To analyze the phenomena, shrinkage of SOFC components single layers and camber development of bi-layers were measured in-situ by optical dilatometry. In addition, a thoughtful investigation of the viscoelastic properties of individual layers was carried out by thermo-mechanical analysis (TMA). The results from the different techniques were found complementary and viscous behavior of the layered ceramics was verified.

M3 - Conference abstract for conference

ER -

Teocoli F, Esposito V, Ni DW, Brodersen K, Ramousse S. Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body. 2013. Abstract from 10th Pacific Rim Conference on Ceramic and Glass Technology, San Diego, CA, United States.