Discovering novel platinum structures

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dc.contributor.advisorLang, Candyen_ZA
dc.contributor.authorMabunda, Khanyisa Prudenceen_ZA
dc.date.accessioned2015-01-08T19:45:29Z
dc.date.available2015-01-08T19:45:29Z
dc.date.issued2013en_ZA
dc.descriptionIncludes abstract.en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractThe Pt[8]Zr ordering transformation in Pt 11 at. % Zr alloys has been studied. The study included determination of the formation of the Pt[8]Zr phase and its order/disorder transformation temperature (Tc). Electron diffraction patterns and dark field images were obtained from transmission electron microscopy to characterize the Pt[8]Zr phase. Microhardness measurements and light microscopy were used to investigate the Pt[8]Zr ordered phase and its effects on hardness and microstructure respectively. The Pt[8]Zr ordered phase was found to be present in the initial as-cast condition and in specimens heat treated up to a temperature of 1070 °C. This is consistent with the DSC measurements of Tc, determined to be 1068 °C. The nucleation of the ordered phase was found to be rapid at any temperature below Tc but the growth of this ordered phase was rather slow, probably due to inadequate vacancies present in the alloy. The domain size of the Pt[8]Zr phase was found to be approximately 10 nm for specimens heat treated at 1000 °C for up to 600 hours.en_ZA
dc.identifier.apacitationMabunda, K. P. (2013). <i>Discovering novel platinum structures</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/11747en_ZA
dc.identifier.chicagocitationMabunda, Khanyisa Prudence. <i>"Discovering novel platinum structures."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013. http://hdl.handle.net/11427/11747en_ZA
dc.identifier.citationMabunda, K. 2013. Discovering novel platinum structures. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Mabunda, Khanyisa Prudence AB - The Pt[8]Zr ordering transformation in Pt 11 at. % Zr alloys has been studied. The study included determination of the formation of the Pt[8]Zr phase and its order/disorder transformation temperature (Tc). Electron diffraction patterns and dark field images were obtained from transmission electron microscopy to characterize the Pt[8]Zr phase. Microhardness measurements and light microscopy were used to investigate the Pt[8]Zr ordered phase and its effects on hardness and microstructure respectively. The Pt[8]Zr ordered phase was found to be present in the initial as-cast condition and in specimens heat treated up to a temperature of 1070 °C. This is consistent with the DSC measurements of Tc, determined to be 1068 °C. The nucleation of the ordered phase was found to be rapid at any temperature below Tc but the growth of this ordered phase was rather slow, probably due to inadequate vacancies present in the alloy. The domain size of the Pt[8]Zr phase was found to be approximately 10 nm for specimens heat treated at 1000 °C for up to 600 hours. DA - 2013 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - Discovering novel platinum structures TI - Discovering novel platinum structures UR - http://hdl.handle.net/11427/11747 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/11747
dc.identifier.vancouvercitationMabunda KP. Discovering novel platinum structures. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 2013 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/11747en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherEngineeringen_ZA
dc.titleDiscovering novel platinum structuresen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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