Novel Three-Dimensional Silicon Carbide Nano-Structures

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dc.contributor.advisorAjayan, Pulickel Men_US
dc.contributor.advisorVajtai, Roberten_US
dc.creatorHart, Amelia HS Churchen_US
dc.date.accessioned2017-07-31T17:54:23Zen_US
dc.date.available2017-07-31T17:54:23Zen_US
dc.date.created2017-05en_US
dc.date.issued2017-02-16en_US
dc.date.submittedMay 2017en_US
dc.date.updated2017-07-31T17:54:23Zen_US
dc.description.abstractSilicon carbide nanotubes have been found to have the same excellent mechanical properties in extreme thermal and oxidative environments as bulk silicon carbide, but with the resiliency similar to carbon nanotubes due to quantum size effects. The simplest, most cost efficient method to synthesize silicon carbide nanotubes is conversion from carbon nanotubes. By investigating the conversion mechanisms of carbon nanotubes (CNTs) to silicon carbide nanotubes (SiCNTs), studying their resulting properties, and applying them in different ways, two composites can be created for use in applications that require optimal mechanical properties in high heat and oxidation. The first structure involves covering continuous silicon carbide fiber with protruding silicon carbide nanotubes, dubbed “fuzzy” fiber, which is created to be woven, layered, and put inside a ceramic matrix for extremely high temperature heat engines encountered in aerospace applications which come into contact with high heat and oxidation. The second structure is a silicon carbide nanotube/nanowire sphere that can be used for its excellent compressive strength and resiliency as well as its resistance to high heat and oxidation. By converting carbon nanotubes to silicon carbide nanotubes/nanowires, structures that are more easy and cost effective to obtain, can be synthesized to maintain excellent mechanical properties in high temperature and oxidative environments.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHart, Amelia HS Church. "Novel Three-Dimensional Silicon Carbide Nano-Structures." (2017) Diss., Rice University. <a href="https://hdl.handle.net/1911/95617">https://hdl.handle.net/1911/95617</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/95617en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSilicon Carbideen_US
dc.subjectSilicon Carbide Nanotubesen_US
dc.subjectSilicon Carbide Nanowiresen_US
dc.subjectCarbon Nanotubesen_US
dc.titleNovel Three-Dimensional Silicon Carbide Nano-Structuresen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentMaterials Science and NanoEngineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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