ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Phase Diagram and Structure of Melts of the System CaO—TiO₂—SiO₂

V. Daněk and I. Nerád

Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-842 36 Bratislava

E-mail: uachdane@savba.sk

Received: 18 December 2000  Revised: 12 June 2002

Abstract: Phase diagrams of the systems CaO—TiO₂ and CaO—TiO₂—SiO₂ were calculated using thermodynamic model of silicate melts. The calculated phase diagrams fit the experimentally determined ones well, assuming that the present TiO₂ behaves as network-forming oxide in the prevailing concentration region of the ternary system. For the better fit in the CaO-, TiO_2-, and SiO_2-rich concentration regions, the activities of these components were set to be equal to their mole fraction. This means that in the prevailing concentration region of the ternary system TiO₂ participates in the formation of the polyanionic network.

Full paper in Portable Document Format: 564a241.pdf

Chemical Papers 56 (4) 241–246 (2002)