| EPSRC Reference: |
GR/L95908/01 |
| Title: |
STRENGTHENING MECHANISMS IN OXIDE CERAMIC NANOCOMPOSITES |
| Principal Investigator: |
Roberts, Professor SG |
| Other Investigators: |
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| Department: |
Materials |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
15 June 1998 |
Ends: |
14 June 2001 |
Value (£): |
185,020
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We will investigate the mechanisms which will lead to exceptional strength in SiC/alumina nanocomposites after simple coarse grinding and annealing. A number of potential mechanisms for strengthening have been identified and these will be tested by experiment. To achieve this we will use a range of techniques including transmission electron microscopy to characterise sub-surface dislocations, acoustic microscopy and Hertzian indentation to characterise surface defect densities and both X-ray diffraction and Hertzian indentation to characterise surface residual stress states. The influence of annealing time, temperature and oxygen partial pressure during annealing will be studied and results presented in a mapping format across this parameter space.We will also determine whether SiC/alumina nanocomposites show crack healing after service by annealing and whether this could be used as an in-service recovery treatment. Finally we will investigate the possibility of SiC nanocomposite strengthening in zirconia matrices.
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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 |
| Summary |
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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.ox.ac.uk |