Thermal aging effect on the joint strength between an SOFC glass-ceramic sealant and LSM-coated metallic interconnect

Fan Lin Hou, Chih Kuang Lin, Atsushi Sugeta, Hiroyuki Akebono, Szu Han Wu, Peng Yang, Ruey Yi Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Lanthanum strontium manganite (LSM) has been practically coated on the metallic interconnect to prevent Cr poisoning in SOFC. The aim of this study is to investigate the joint strength between a glass-ceramic sealant and an LSM-coated interconnect steel at room temperature (RT) and 800°C. Effect of long-term thermal aging is also characterized. Results indicate that LSMcoated specimens have a lower joint strength than the uncoated ones. It is attributable to the existence of pores around the interface between glass-ceramic sealant and LSM coating. However, the shear strength of LSM-coated joint specimen is enhanced by 52% at RT and by 200% at 800°C after 1000-h thermal aging at 800°C. The given thermal aging treatment also improves the tensile strength of LSM-coated joint specimen by 50% at 800°C. It is attributed to a self-healing effect of the glass-ceramic sealant during thermal aging to reduce the pore size.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. C. Singhal, T. Kawada
PublisherElectrochemical Society Inc.
Pages1721-1729
Number of pages9
Edition1
ISBN (Electronic)9781607688150, 9781607688150
DOIs
StatePublished - 30 May 2017
Event15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, United States
Duration: 23 Jul 201728 Jul 2017

Publication series

NameECS Transactions
Number1
Volume78
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
Country/TerritoryUnited States
CityHollywood
Period23/07/1728/07/17

Fingerprint

Dive into the research topics of 'Thermal aging effect on the joint strength between an SOFC glass-ceramic sealant and LSM-coated metallic interconnect'. Together they form a unique fingerprint.

Cite this