Effects of co-sintering in self-standing CGO/YSZ and CGO/ ScYSZ dense bi-layers

Research output: Research - peer-reviewJournal article – Annual report year: 2014

View graph of relations

Viscoelastic properties and sintering mechanisms of tape-casted gadolinium-doped ceria (CGO), yttrium-stabilized zirconia (YSZ), and scandium–yttriumstabilized zirconia (ScYSZ) are characterized in order to investigate the reciprocal thermo-mechanical compatibility when arranged as a self-standing bi-layered electrolyte system. The combined use of thermo-mechanical analysis, optical dilatometry, and scanning electron microscopy ensures a systematic characterization of both the individual layers and CGO/YSZ and CGO/ScYSZ bi-layered laminates. The results of the co-firing process of the bi-layers are critical due to the mismatch of thermo-mechanical and sintering properties among the materials. Despite the better sinteractivity of ScYSZ, the self-standing CGO/ScYSZ bilayer presents more challenges in terms of densification compared with the CGO/YSZ bi-layer. In particular, above 1200 C, ScYSZ and CGO show residual porosity, and at higher sintering temperatures, above 1300 C, full densification is completely inhibited by constrained sintering phenomena.
Original languageEnglish
JournalJournal of Materials Science
Volume49
Pages (from-to)5324–5333
ISSN0022-2461
DOIs
StatePublished - 2014
CitationsWeb of Science® Times Cited: 10
Download as:
Download as PDF
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBE/CSEHarvardMLAStandardVancouverShortLong
Word

ID: 91876662