| EPSRC Reference: |
GR/R08018/01 |
| Title: |
Experimental-Theoretical Study of Alloying Behavior of High Temperature Metal Silicides |
| Principal Investigator: |
Pettifor, Professor D |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Materials |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
06 August 2001 |
Ends: |
05 December 2004 |
Value (£): |
137,217
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Energy |
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| Related Grants: |
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| Panel History: |
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Summary on Grant Application Form |
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High temperature material are key to developing the next generation aerospace propulsion and power systems successfully. Intermetallic compounds are candidates because of their strength, high elastic moduli and creep. Currently alloys are designed either empirically or using experimental and calculated phase equilibria data. The CALPHAD method is fundamentally phenomenological in nature and cannot produce data in lattice stabilities for metastable phases. This data, which is the product of ab initio calculations, has to be incorporated in CALPHAD. The latter can say very little about the nature of alloying behaviour, which can be studies either experimentally using electron spectroscopy or via ab initio calculations. Experiments measure the Auger parameter of elements and its variation over a wide composition range, thus providing a means of testing some of the predictions of ab initio calculations. This research links experiments and ab initio calculations to understand the inter-relationships between electronic structure-bonding-crystal-structure-microstructure-properties in silicides. Electron spectroscopy, electronic structure calculations, thermodynamic calculations and mocrostuctural characterisation will be used as tools to probe the electronic and structural changes that take place as a result of substituting Si and transition metal in transition metal silicides and to relate such changes to the oxidation behaviour and toughness of (Mo, Cr)(Si, AI)2. The research addresses Technology Foresight priorities that are relevant to the development of materials, which have the potential to meet foreseeable market needs and enable wealth creation in the UK, underpins the exploitation of materials to the benefit of UK industry and will foster core competencies of the Metallurgical, Materials Science and Metal Physics communities of the UK.
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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 |