Open AccessKINETICS OF SECOND PHASE Ba6Ti17O40 FORMATION
Author(s) -
Jinyuan Hu
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.1485
Subject(s) - kinetics , activation energy , phase (matter) , materials science , thermodynamics , reaction rate constant , diffraction , chemical kinetics , chemistry , physics , optics , organic chemistry , quantum mechanics
Kinetics of second phase Ba6Ti17O40 formation in the mixture of BaTiO3 and excess TiO2 were studied by high-temperature X-ray diffraction method. The reaction curves were obtained at various temperatures for the formation of Ti-rich phase Ba6Ti17O40, and the reaction rate constant K and the activation energy Q were calculated. Finally, the mechanism of second phase Ba6Ti17O40 formation and the effect of excess TiO2 are discussed.