Joint strength of a solid oxide fuel cell glass-ceramic sealant with metallic interconnect

Chih Kuang Lin, Jun Yu Chen, Jie Wun Tian, Lieh Kwang Chiang, Si Han Wu

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The aim of this study is to investigate the joint strength between a newly developed glass-ceramic sealant (GC-9) and metallic interconnect (Crofer 22 H) for planar solid oxide fuel cells (pSOFCs). The joint strength is evaluated at room temperature and 800 °C under shear and tensile loading using two types of sandwich specimen. Effects of number of initial sealant-spreading side, pre-oxidation of metallic interconnect, and thermal aging in air on the joint strength are studied. Regardless of testing temperature and loading mode, the joint strength of specimens initially with two sides of glass-ceramic sealant is greater than that of single-sided ones. A pre-oxidation treatment of the metal coupon at 900 °C for 2 h or 20 h does not generate a beneficial effect on the shear and tensile joint strength for all the given testing conditions. Compared to the shear strength of unaged joint specimens, a reduction of 17-19% in shear joint strength at 800 °C is observed for variously aged ones.

Original languageEnglish
Pages (from-to)307-317
Number of pages11
JournalJournal of Power Sources
Volume205
DOIs
StatePublished - 1 May 2012

Keywords

  • Glass-ceramic sealant
  • Joint strength
  • Metallic interconnect
  • Planar solid oxide fuel cell
  • Pre-oxidation treatment
  • Thermal aging

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