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The effects of annealing on phase transformation in platinum-molybdenum coatings
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Physics
2015
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| _version_ | 1867613150590795776 |
|---|---|
| access_status_str | Open Access |
| author | Khumalo, Zakhelumuzi Mesuli |
| author2 | Blumenthal, M |
| author_browse | Blumenthal, M Khumalo, Zakhelumuzi Mesuli |
| author_facet | Blumenthal, M Khumalo, Zakhelumuzi Mesuli |
| author_sort | Khumalo, Zakhelumuzi Mesuli |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/10916 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:34.243Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Physics |
| publisherStr | Department of Physics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/10916 The effects of annealing on phase transformation in platinum-molybdenum coatings Khumalo, Zakhelumuzi Mesuli Blumenthal, M Comrie, Craig Physics Includes bibliographical references. The thermodynamic study of platinum binary systems has both fundamental and applied aspects. It is due to the fact that the formation of ordered phases increases the strength and surface hardness and could also have an impact on surface activity and chemical properties. The changes in mechanical, physical and chemical properties could be of significant importance in enhancing the performance of platinum-based systems in their respective applications, such as gas sensors, catalyst, fuel cells and superconductors. In this investigation, the phase transformation in Pt-Mo coated systems induced by thermal annealing was studied by X-ray diffraction, scanning electron microscope, transmission electron microscope, energy dispersive X-ray emission and Rutherford backscattering spectrometry. The phase analysis showed the presence of several intermetalic phases, Pt2Mo, PtMo and Pt2Mo3 which were observed to nucleate in sequence when the annealing time and temperature were extended. RBS analysis showed an increase in coating thickness after annealing which has been attributed to the formation of the Pt-Mo phases. 2015-01-01T13:13:51Z 2015-01-01T13:13:51Z 2012 Master Thesis Masters MSc http://hdl.handle.net/11427/10916 eng application/pdf Department of Physics Faculty of Science University of Cape Town |
| spellingShingle | Physics Khumalo, Zakhelumuzi Mesuli The effects of annealing on phase transformation in platinum-molybdenum coatings |
| thesis_degree_str | Master's |
| title | The effects of annealing on phase transformation in platinum-molybdenum coatings |
| title_full | The effects of annealing on phase transformation in platinum-molybdenum coatings |
| title_fullStr | The effects of annealing on phase transformation in platinum-molybdenum coatings |
| title_full_unstemmed | The effects of annealing on phase transformation in platinum-molybdenum coatings |
| title_short | The effects of annealing on phase transformation in platinum-molybdenum coatings |
| title_sort | effects of annealing on phase transformation in platinum molybdenum coatings |
| topic | Physics |
| url | http://hdl.handle.net/11427/10916 |
| work_keys_str_mv | AT khumalozakhelumuzimesuli theeffectsofannealingonphasetransformationinplatinummolybdenumcoatings AT khumalozakhelumuzimesuli effectsofannealingonphasetransformationinplatinummolybdenumcoatings |