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 (US) |
---|---|
Pages (from-to) | 8402-8405 |
Number of pages | 4 |
Journal | Journal of Power Sources |
Volume | 196 |
Issue number | 20 |
DOIs | |
State | Published - Oct 15 2011 |
Externally published | Yes |
Bibliographical note
Funding Information:The authors wish to thank the Irish Research Council for Science, Engineering and Technology through an EMPOWER Post-doctoral Fellowship (YD) and China Post-Doctoral Grant Scheme (contract no. 20100470846) for financial support.
Keywords
- CoO co-doping
- Mechanical strengthening
- SOFC electrolyte
- Sm-doped CeO
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering