| EPSRC Reference: |
GR/K13189/01 |
| Title: |
INVESTIGATION OF PROCESSING, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DOPED CERIA ELECTROLYTES |
| Principal Investigator: |
Shemilt, Dr J |
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| Department: |
Materials Engineering |
| Organisation: |
Brunel University London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 February 1995 |
Ends: |
31 January 1998 |
Value (£): |
143,238
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Summary on Grant Application Form |
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An investigation of the correlation between processing parameters, fired ceramic microstructure and mechanical properties of electrolyte materials for solid oxide fuel cells (SOFC's) which are based on ceria, singly doped with samaria or doubly doped with samaria plus small additions of (typically) praseodymium oxide. Specimens will be prepared by plastic forming of the green ceramic body to give bulk and thin-platefilms. Density measurements, phase analysis by XRD and microstructural analysis by SEM and TEM will be used to characterise the fired ceramics. Bulk specimens will be machined to provide samples for uniaxial four-point flexure testing between ambient and 1000oC to provide fracture strengths and fracture toughness (by SENB). Thin-plate specimens will be tested in biaxial flexure at room temperature, 500oC and 1000oC to determine fast fracture strengths and delayed fracture behaviour. Results from mechanical testing will be used to optimise the processing parameters and also investigate the fracture processes for these ceramics. Data collected during this project will be applied to the design of fabrication and mechanical testing techniques for monolithic electrode/doped ceria electrolyte/electrode assemblies for SOFC's suitable for large or small scale electricity supply and /or vehicle propulsion.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.brunel.ac.uk |