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Kinetic Studies of the Thermal Synthesis of Calcium Silicates Above 1400°C: I, Dynamic Thermal Synthesis of Ca 2 SiO 4
Author(s) -
FIERENS P.,
PICQUET P.
Publication year - 1975
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1975.tb18982.x
Subject(s) - thermogravimetry , stoichiometry , diffraction , analytical chemistry (journal) , x ray crystallography , thermal analysis , mineralogy , quartz , thermal , differential thermal analysis , materials science , chemistry , inorganic chemistry , thermodynamics , metallurgy , optics , physics , chromatography
The dynamic reaction of SiO 2 with CaO (1:2 mol ratio) was studied at temperatures up to 1500°C, especially those > 1400°C. Simultaneous TG and DTA, high‐temperature X‐ray diffraction (horizontal sample), and high‐temperature microscopy and dilatometry were used. The reactants (CaCO 3 and quartz) were finely ground and mixed in stoichiometric amounts. Thermogravimetry was used to ascertain that the samples were representative and homogeneous. The reaction mechanism in the dynamic thermal synthesis of Ca 2 SiO 4 was elucidated and confirmed by high‐temperature X‐ray diffraction.