Novel Three-Dimensional Silicon Carbide Nano-Structures

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dc.contributor.advisorAjayan, Pulickel M
dc.contributor.advisorVajtai, Robert
dc.creatorHart, Amelia HS Church
dc.date.accessioned2017-07-31T17:54:23Z
dc.date.available2017-07-31T17:54:23Z
dc.date.created2017-05
dc.date.issued2017-02-16
dc.date.submittedMay 2017
dc.date.updated2017-07-31T17:54:23Z
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.
dc.format.mimetypeapplication/pdf
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>.
dc.identifier.urihttps://hdl.handle.net/1911/95617
dc.language.isoeng
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.
dc.subjectSilicon Carbide
dc.subjectSilicon Carbide Nanotubes
dc.subjectSilicon Carbide Nanowires
dc.subjectCarbon Nanotubes
dc.titleNovel Three-Dimensional Silicon Carbide Nano-Structures
dc.typeThesis
dc.type.materialText
thesis.degree.departmentMaterials Science and NanoEngineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy
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