Fabio Greco
École Polytechnique Fédérale de Lausanne
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Publication
Featured researches published by Fabio Greco.
Journal of Testing and Evaluation | 2018
Tesfaye Tadesse Molla; Fabio Greco; Kawai Kwok; Philipp Zielke; Henrik Lund Frandsen
Analyzing the thermomechanical reliability of the solid oxide cell (SOC) stack requires precise measurement of the mechanical properties of the different components in the stack at operating conditions of the SOC. It is challenging to precisely characterize the time-dependent deformational properties of metallic components in the SOC stacks at the required level of stress and operational conditions (high temperature and controlled atmosphere). This work presents an improved methodology for characterizing the time-dependent, or viscoplastic, properties of metallic alloys used in the SOC stacks at a high temperature and in a controlled atmosphere. The methodology uses a mechanical loading rig designed to apply variable and constant loads on samples within a gas-tight high temperature furnace. In addition, a unique, remotely installed length measuring setup involving a laser micrometer is used to monitor deformations in the sample. Application of the methodology is exemplified by measurement of stress relaxation, creep, and constant strain rate behaviors of a high-temperature alloy used in the construction of SOC metallic interconnects at different temperatures. Furthermore, measurements using the proposed methodology are also verified by the literature and experiments conducted using other machines.
Solid Oxide Fuel Cell Lifetime and Reliability#R##N#Critical Challenges in Fuel Cells | 2017
Manuel Bianco; Markus Linder; Yngve Larring; Fabio Greco; Jan Van herle
Abstract The manuscript aims to introduce the reader to the main drawbacks interconnects face in SOFC environments, giving the basis to understand the problem and the literature references to deepen the knowledge on each specific topic.The chapter is divided in two parts: a theoretical description of the degradation phenomena affecting the interconnects (notably corrosion and mechanical stresses) and a table presenting its behaviour in operating conditions, at the end of the chapter. In the first part, influence of oxygen, fuel and water partial pressure on scale growth process are taken in consideration, with the latter being the most influent. A paragraph is dedicated to the corrosion behaviour of sealants too, while the mechanical degradation part is focused on the model methodology currently used to forecast stress-strain behaviour in SOFC metal interconnects. A paragraph describing solutions to mitigate interconnect lifetime issues is provided at the end of this section. In the table are presented results of interconnects coupled with different types of SOFC cell: anode, electrolyte and metal supported and tested in operating conditions. From the analysis of the data collected in the table, it can be said that current solutions to extend lifetime are already reasonably effective
Solid Oxide Fuel Cell Lifetime and Reliability | 2017
Manuel Bianco; Markus Linder; Yngve Larring; Fabio Greco; Jan Van herle
Abstract The manuscript aims to introduce the reader to the main drawbacks interconnects face in SOFC environments, giving the basis to understand the problem and the literature references to deepen the knowledge on each specific topic.The chapter is divided in two parts: a theoretical description of the degradation phenomena affecting the interconnects (notably corrosion and mechanical stresses) and a table presenting its behaviour in operating conditions, at the end of the chapter. In the first part, influence of oxygen, fuel and water partial pressure on scale growth process are taken in consideration, with the latter being the most influent. A paragraph is dedicated to the corrosion behaviour of sealants too, while the mechanical degradation part is focused on the model methodology currently used to forecast stress-strain behaviour in SOFC metal interconnects. A paragraph describing solutions to mitigate interconnect lifetime issues is provided at the end of this section. In the table are presented results of interconnects coupled with different types of SOFC cell: anode, electrolyte and metal supported and tested in operating conditions. From the analysis of the data collected in the table, it can be said that current solutions to extend lifetime are already reasonably effective
Archive | 2017
Manuel Bianco; Markus Linder; Yngve Larring; Fabio Greco; Jan Van herle
Abstract The manuscript aims to introduce the reader to the main drawbacks interconnects face in SOFC environments, giving the basis to understand the problem and the literature references to deepen the knowledge on each specific topic.The chapter is divided in two parts: a theoretical description of the degradation phenomena affecting the interconnects (notably corrosion and mechanical stresses) and a table presenting its behaviour in operating conditions, at the end of the chapter. In the first part, influence of oxygen, fuel and water partial pressure on scale growth process are taken in consideration, with the latter being the most influent. A paragraph is dedicated to the corrosion behaviour of sealants too, while the mechanical degradation part is focused on the model methodology currently used to forecast stress-strain behaviour in SOFC metal interconnects. A paragraph describing solutions to mitigate interconnect lifetime issues is provided at the end of this section. In the table are presented results of interconnects coupled with different types of SOFC cell: anode, electrolyte and metal supported and tested in operating conditions. From the analysis of the data collected in the table, it can be said that current solutions to extend lifetime are already reasonably effective
Journal of The European Ceramic Society | 2014
Fabio Greco; Henrik Lund Frandsen; Arata Nakajo; Jan Van herle
Journal of Power Sources | 2016
Henrik Lund Frandsen; Malgorzata Grazyna Makowska; Fabio Greco; Christodoulos Chatzichristodoulou; De Wei Ni; Declan Curran; Markus Strobl; Luise Theil Kuhn; Peter Vang Hendriksen
ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV (July 26-31, 2015) | 2015
Fabio Greco; Arata Nakajo; Zacharie Wuillemin; Jan Van herle
SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells (July 23-28, 2017) | 2017
Martin Hauth; Vincent Lawlor; Peter Cartellieri; Christopher x Christopher Zechmeister; Sebastian Wolff; Christian Bucher; Jürgen Malzbender; Jianping Wei; André Weber; Georgios Tsotridis; Henrik Lund Frandsen; Kawai Kwok; Tesfaye Tadesse Molla; Zacharie Wuillemin; Jan Van herle; Fabio Greco; Thierry Cornu; Arata Nakajo; Alan Atkinson; Luc Vandeperre; Xin Wang
ECS Conference on Electrochemical Energy Conversion & Storage with SOFC-XIV (July 26-31, 2015) | 2015
Arata Nakajo; Andrew M. Kiss; Alex P. Cocco; William M. Harris; Matthew B. DeGostin; Fabio Greco; George J. Nelson; Aldo A. Peracchio; Brice N. Cassenti; A. Deriy; Steve Wang; Y. Chen-Wiegart; J. Wang; J. Van herle; Wilson K. S. Chiu
SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells (July 23-28, 2017) | 2017
Fabio Greco; Arata Nakajo; Zacharie Wuillemin; Jan Van herle