Study of complex molecular species in the gas phase over the CaO-MgO-Al sub(2)O sub(3)-TiO sub(2)-SiO sub(2) system

Experimental mass spectrometric data obtained by the Knudsen effusion mass spectrometry are used to analyze principal tendencies in the formation of complex oxides contained in the gas phase over compounds and melts in the CaO-MgO-Al sub(2)O sub(3)-TiO sub(2)-SiO sub(2) system. Dependences are derived for concentrations of the complex molecular species in the gas phase at the vaporization of mullite Al sub(6)Si sub(2)O sub(13), wollastonite CaSiO sub(3), spinel MgAl2O4, perovskite CaTiO sub(3), and the Al sub(2)O sub(3)-SiO sub(2) and CaO-SiO sub(2) binary boundary systems on temperature, melt composition, and oxygen partial pressure.