| EPSRC Reference: |
GR/J86513/01 |
| Title: |
SURFACE DAMAGE WEAR MECHANISMS AND IMPROVED WEAR RESISTANCE IN ALUMINA CERAMICS |
| Principal Investigator: |
Riley, Professor F |
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| Department: |
Institute of Materials Research |
| Organisation: |
University of Leeds |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 November 1994 |
Ends: |
30 April 1998 |
Value (£): |
136,417
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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The aim of this project is to develop a design capability for alumina-based ceramics of improved wear resistance, on the basis of a detailed analysis of the response of the materials to a high-load displacement controlled indenter ( nano-indenter ) coupled with acoustic emission. A set of alumina materials of controlled microstructure and composition will be prepared by sintering and hot-pressing high purity alumina powder containing selected liquid-forming additives. The resulting materials behaviours will be mapped under low levels of point loading mimicking those likely to be experienced during erosive or abrasive wear. This experimental approach will be supported by the use of controlled wet and dry erosive wear tests, bend strength measurement, the examination of indented and worn surface by TEM and SEM, and a novel acoustic emission crack detection technique. Damage processes will be related to wear rates and material microstructure defined in terms of porosity, grain size, intergranular phase composition and location. The knowledge gained about the basic crack initiation and propagation processes on the mm scale will be used to identify microstructural features associated with optimum wear resistance, to allow the microstructural design of alumina materials of improved wear characteristics.
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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.leeds.ac.uk |