Abstract
Combustion processed nano-sized Ce0.79Sm0.20Co 0.01O2-δ (CSCoO) and Ce0.80Sm 0.20O2-δ (CSO) were sintered at various temperatures, and mechanical properties and microstructures were characterized. The results demonstrate that besides a lowering of sintering temperature to achieve sufficient densification, the doping of very minor amounts of CoO (1 mol%) to CSO significantly enhanced mechanical properties. The CSCoO sintered at 1100 °C exhibits a biaxial flexural strength of 354 ± 42 MPa which compared with 194 ± 57 MPa for CSO with a similar relative density sintered at 1400 °C. This slight modification in chemical composition also resulted in a slight improvement in micro-hardness.
Original language | English |
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Pages (from-to) | 8402-8405 |
Number of pages | 4 |
Journal | Journal of Power Sources |
Volume | 196 |
Issue number | 20 |
DOIs | |
Publication status | Published - 15 Oct 2011 |
Keywords
- CoO co-doping
- Mechanical strengthening
- Sm-doped CeO
- SOFC electrolyte