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dc.contributor.advisorLombardo, Stephen J. (Stephen John)eng
dc.contributor.authorMoss, Murray A.eng
dc.date.issued2012eng
dc.date.submitted2012 Falleng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on March 8, 2013).eng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionThesis advisor: Dr. Stephen J. Lombardoeng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionM. S. University of Missouri--Columbia 2012.eng
dc.description"December 2012"eng
dc.description.abstractA combined dilatometer mass spectrometer system (CDMS) is used to monitor the gas phase species and sintering progress in real time during the heating of barium titanate and ultra high temperature ceramics (UHTCs), including zirconium diboride and sintering additives. For loose powder and pressed samples of barium titanate heated at different rates, two families of signals were observed by mass spectrometry at mass to charge (m/z) ratios of 44 and 64 prior to the onset of sintering at 1150[degrees]C, and were assigned as carbon dioxide and sulfur dioxide. The sources for carbon dioxide and sulfur dioxide evolution include organic impurities arising from processing, exposure to ambient organic material, adsorbed carbon dioxide and residual unreacted or surface barium carbonate and barium sulfate. The UHTCs and common sintering aids heated in the CDMS individually and in mixtures include zirconium diboride, boron carbide, silicon carbide, boron oxide, zirconium oxide, zirconium disilicide, boron nitride spray, and organic binder, dispersant, and surfactant. Signals below 660[degrees]C for these UHTCs are attributed to the decomposition of organics present in the boron nitride spray, binder, dispersant, and surfactant. The signals above 900[degrees]C were determined to be CO and CO2.eng
dc.format.extentxiii, 142 pageseng
dc.identifier.urihttp://hdl.handle.net/10355/33154
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.rightsOpenAccess.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.subjectdilatometer mass spectrometer systemeng
dc.subjectsintering temperatureeng
dc.subjectgas phase specieseng
dc.titleCombined dilatometry and mass spectrometry of sintering and evolved gases of barium titanate and zirconium diboride with sintering additiveseng
dc.typeThesiseng
thesis.degree.disciplineChemical engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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