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The Resource Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering, by Matthew Schurwanz, (electronic resource)

Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering, by Matthew Schurwanz, (electronic resource)

Creator
Contributor
Summary
Details on the components and materials comprising the combined dilatometry mass spectrometry (CDMS) apparatus are provided; including recent modifications, operating procedures and information on major system failures. The CDMS is then used to study the gas phase reactions that occur during the sintering of strontium titanate. Two families of peaks are identified based on isotope ratios, cracking patterns, and comparisons to the decomposition of model compounds, as carbon dioxide and sulfur dioxide. Quantitative analysis was performed by comparing the primary peak size from the strontium titanate sample to the decomposition of the model compounds, showing that these two gases can account for between 60 to 200% of the observed weight loss. This range is because it is unclear whether the carbon and sulfur reacted with oxygen occurring in the crystal matrix, or with trace oxygen in the atmosphere. The model-free technique for determining the apparent activation energy of sintering proposed by Su and Johnson is modified using an approximation developed by Lee and Beck. The analytic equations are compared to numeric integration to find the activation energy of sintering for simulated data. All equations are proven to be highly accurate, two of them more so than numeric integration when noise is present in the data. Additionally, if an equation for the mechanism is known, the approximation can be substituted for the integral so that the full equation can be mathematically manipulated to facilitate analysis of the assumed mechanism
Language
eng
Work
Publication
Extent
1 online resource (xiii, 107 pages)
Note
  • Title from PDF of title page (University of Missouri--Columbia, viewed on April 1, 2011)
  • The 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
  • Thesis advisor: Dr. Stephen J. Lombardo
Instance
Label
Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering
Title
Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering
Statement of responsibility
by Matthew Schurwanz
Creator
Contributor
Thesis advisor
Subject
Genre
Language
eng
Summary
Details on the components and materials comprising the combined dilatometry mass spectrometry (CDMS) apparatus are provided; including recent modifications, operating procedures and information on major system failures. The CDMS is then used to study the gas phase reactions that occur during the sintering of strontium titanate. Two families of peaks are identified based on isotope ratios, cracking patterns, and comparisons to the decomposition of model compounds, as carbon dioxide and sulfur dioxide. Quantitative analysis was performed by comparing the primary peak size from the strontium titanate sample to the decomposition of the model compounds, showing that these two gases can account for between 60 to 200% of the observed weight loss. This range is because it is unclear whether the carbon and sulfur reacted with oxygen occurring in the crystal matrix, or with trace oxygen in the atmosphere. The model-free technique for determining the apparent activation energy of sintering proposed by Su and Johnson is modified using an approximation developed by Lee and Beck. The analytic equations are compared to numeric integration to find the activation energy of sintering for simulated data. All equations are proven to be highly accurate, two of them more so than numeric integration when noise is present in the data. Additionally, if an equation for the mechanism is known, the approximation can be substituted for the integral so that the full equation can be mathematically manipulated to facilitate analysis of the assumed mechanism
Cataloging source
MUU
http://library.link/vocab/creatorDate
1983-
http://library.link/vocab/creatorName
Schurwanz, Matthew
Degree
M.S.
Dissertation year
2010.
Granting institution
University of Missouri--Columbia
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorName
Lombardo, Stephen J.
http://library.link/vocab/subjectName
  • Chemical reactions
  • Gas chromatography
  • Mass spectrometers
  • Dilatometer
  • Sintering
  • Strontium
  • Titanates
Target audience
specialized
Label
Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering, by Matthew Schurwanz, (electronic resource)
Instantiates
Publication
Note
  • Title from PDF of title page (University of Missouri--Columbia, viewed on April 1, 2011)
  • The 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
  • Thesis advisor: Dr. Stephen J. Lombardo
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
712789905
Extent
1 online resource (xiii, 107 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote
System control number
(OCoLC)712789905
Label
Development of a combined dilatometer and mass spectrometer system for studying gas phase chemistry and kinetics during sintering, by Matthew Schurwanz, (electronic resource)
Publication
Note
  • Title from PDF of title page (University of Missouri--Columbia, viewed on April 1, 2011)
  • The 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
  • Thesis advisor: Dr. Stephen J. Lombardo
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
712789905
Extent
1 online resource (xiii, 107 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations
Specific material designation
remote
System control number
(OCoLC)712789905

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Genre

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