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http://hdl.handle.net/11375/7744
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DC Field | Value | Language |
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dc.contributor.advisor | Smeltzer, W. W. | en_US |
dc.contributor.author | Davies, Haydn | en_US |
dc.date.accessioned | 2014-06-18T16:40:20Z | - |
dc.date.available | 2014-06-18T16:40:20Z | - |
dc.date.created | 2010-08-09 | en_US |
dc.date.issued | 1973-05 | en_US |
dc.identifier.other | opendissertations/3000 | en_US |
dc.identifier.other | 4018 | en_US |
dc.identifier.other | 1431873 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/7744 | - |
dc.description.abstract | <p>This thesis concerned with the experimental determinations of the thermodynamic parameters describing the Fe-Ni-O and Ni-Cr-O ternaries between 900°C and 1100°C.</p> <p>Equilibrium oxygen pressures for Fe-Ni and Ni-Cr allows equilibrated with their oxides have been measured by an electrochemical cell with a calcia stabilised zirconia electrolyte. These pressures were related to compositional determinations of the solid phases, using an electron probe microanalyser, and correlated with the ternary isotherms. Both the Fe-Ni-O and Ni-Cr-O systems have been described by equilibrium oxygen pressure diagrams which relate oxyren activity to the compositions of the equilibrated phases.</p> <p>The variation of metal activities with alloy composition for Fe-Ni and Ni-Cr alloys has been determined between 900°C and 1100°C. Spinel-alloy equilibria in the Fe-Ni-O system have been described by a Gibba-Duhem calculation and by a structural model for the spinel based on a lattice point defect model.</p> <p>Experimental observations of the scales formed on Fe-Ni-Cr alloys are qualitatively discussed with respect to thermodynamic considerations.</p> | en_US |
dc.subject | Materials Science and Engineering | en_US |
dc.subject | Metallurgy | en_US |
dc.subject | Materials Science and Engineering | en_US |
dc.title | Metal and oxygen activities in the Fe-Ni-O and Ni-Cr-O systems between 900°C and 1100°C | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Metallurgy and Materials Science | en_US |
dc.description.degree | Doctor of Philosophy (PhD) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
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File | Size | Format | |
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fulltext.pdf | 4.3 MB | Adobe PDF | View/Open |
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