USE OF A MASS SPECTROMETER TO STUDY THE HIGH-TEMPERATURE KINETICS OF THE VAPORIZATION OF NON-STOICHIOMETRIC TIO2.
Rept. for Aug 60-Jun 64, doctoral thesis,
STATE UNIV OF NEW YORK ALFRED COLL OF CERAMICS
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In order to demonstrate the feasibility of studying the high-temperature kinetics of vaporization in a solid source combination surface ionization-electron affinity mass spectrometer, the kinetics of the vaporization of non-stoichiometric TiO2 under high vacuum were observed between 1115K and 2045K. A vant Hoff differential method analysis was performed on the raw data to determine the reaction-rate order. A first-order reaction-rate process was indicated in both cases. Rate constants for both processes, as well as for the overall vaporization on non-stoichiometric TiO2, were calculated at approximately 50K intervals between 1115K and 2045K. An Arrhenius-type analysis was performed and activation energies were observed. A thorough investigation was made of the possible systematic and random errors involved in using a solid source mass spectrometer to study the kinetics of high-temperature vaporization. Author