dc.creator | Vora, Nirav Dineshkumar | |
dc.date.accessioned | 2020-08-21T20:54:26Z | |
dc.date.available | 2011-01-08 | |
dc.date.issued | 2009-01-08 | |
dc.identifier.uri | https://etd.library.vanderbilt.edu/etd-01022009-113051 | |
dc.identifier.uri | http://hdl.handle.net/1803/10397 | |
dc.description.abstract | A study of the high temperature oxidation of silica formers in dissociated oxygen is presented in this dissertation. Flowing an O2/Ar gas mixture through a microwave discharge before it entered a flow reactor generated the partially dissociated oxygen environment. The samples were oxidized at high temperatures (1183 K – 1323 K) and low pressures (3 Torr – 4 Torr). The O atom concentration near the sample surface, determined using a semi-empirical reactor model, was used to define the quantitative role of O atoms in the oxidation mechanism. The continuous, non-isothermal, compressible, laminar flow, coupled with high-temperature oxygen plasma afterglow chemistry model was solved using the finite element method. Modeling of the silicon, Si3N4, and SiC oxidation mechanisms showed that the O atom is the dominant oxidizing species, with O2 having a negligible effect. | |
dc.format.mimetype | application/pdf | |
dc.subject | oxygen plasma afterglow | |
dc.subject | high temperature | |
dc.subject | oxidation of silicon | |
dc.subject | finite element model | |
dc.subject | parallel oxidation model | |
dc.subject | reactive compressible flow | |
dc.subject | Silicon compounds -- Oxidation | |
dc.subject | Heat resistant materials | |
dc.subject | Space vehicles -- Materials | |
dc.title | High temperature oxidation of silica formers in dissociated oxygen | |
dc.type | dissertation | |
dc.contributor.committeeMember | Dr. Ken A. Debelak | |
dc.contributor.committeeMember | Dr. Kane Jennings | |
dc.contributor.committeeMember | Dr. M. Douglas LeVan | |
dc.contributor.committeeMember | Dr. D. Greg Walker | |
dc.type.material | text | |
thesis.degree.name | PHD | |
thesis.degree.level | dissertation | |
thesis.degree.discipline | Chemical Engineering | |
thesis.degree.grantor | Vanderbilt University | |
local.embargo.terms | 2011-01-08 | |
local.embargo.lift | 2011-01-08 | |
dc.contributor.committeeChair | Dr. Bridget R. Rogers | |