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Cu-based catalysts on g-alumina for methanol reforming

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
20 KB
Volume
2003
Category
Article
ISSN
1464-2859

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✦ Synopsis

Fracture energy and crack growth in surface-treated YSZ for SOFCs

The SOFC electrolyte, yttria-stabilized zirconia (YSZ), was coated and co-sintered with different electrode coatings. Two energy release rates -for crack initiation and arrest -characterized the cracking behavior. A 30-50% improvement in fracture resistance compared with untreated YSZ was due to coating effects. Interdiffusion of Mn and Ni from coatings into the YSZ lattice during sintering appears to introduce residual stresses, for improved fracture energy. Crack bridging appears to contribute to improved fracture toughness in surface-treated YSZ. A.N. Kumar and B.F.

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