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On the Formation of Titanite
Author(s) -
Steinike U.,
Uecker D.Chr.,
Köhler Th.,
Plötner W.,
Schierhorn E.,
Jancke K.,
Hennig HP.
Publication year - 1991
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170260810
Subject(s) - titanite , quartz , cristobalite , titanate , mineralogy , ion , materials science , diffusion , lattice (music) , chemistry , chemical engineering , ceramic , metallurgy , thermodynamics , physics , organic chemistry , acoustics , engineering
The formation of titanite (CaTiSiO 5 ) out of the starting materials quartz and titanate (CaTiO 3 ) is investigated in dependence on the mechanical activation. The formation temperature may be lowered by the use of mechanically disturbed quartz. There are optimal conditions for the reaction concerning the mechanically generated disorders. Cristobalite is an intermediate. The formation of titanite is ascribed as one‐sided bulk diffusion of Ca‐ and Ti‐ions (or corresponding oxygen complexes) into a quartz lattice being in the state of transformation and as a surface reaction of Si‐ions (or corresponding oxygen complexes) on the titanate surface.