Mass-Spectrometric Study of Evaporation of Perovskite

The evaporation of perovskite CaTiO 3 at 1700–2200 K was studied by the high-temperature mass-spectrometric Knudsen effusion method. The molecular components typical of simple oxides and a small amount of complex gaseous oxide CaTiO 3 were identified in the gas phase over perovskite. The partial vap...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2019-06, Vol.93 (6), p.1024-1031
Main Author: Shornikov, S. I.
Format: Article
Language:English
Subjects:
Calcium titanate
Chemical Thermodynamics and Thermochemistry
Chemistry
Chemistry and Materials Science
Evaporation
High temperature
Knudsen effusion
Perovskites
Physical Chemistry
Spectrometry
Vapor phases
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Summary:The evaporation of perovskite CaTiO 3 at 1700–2200 K was studied by the high-temperature mass-spectrometric Knudsen effusion method. The molecular components typical of simple oxides and a small amount of complex gaseous oxide CaTiO 3 were identified in the gas phase over perovskite. The partial vapor pressures of the molecular components of the gas phase over perovskite were compared with those corresponding to simple oxides; it was found that the character of evaporation of perovskite is mainly affected by the calcium component.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024419060293