Interaction in self-flux of systems MI₂O-P₂O₅-TiO₂-MIIO (MI - Rb, Rb/K, MII - Cu, Zn)

Abstract

Peculiarities of phase formation in the self-flux of systems MI₂O-P₂O₅-TiO₂-MIIO (MI - Rb, Rb/K, MII - Cu, Zn) were investigated at different molar ratios MI/P = 0.5-1.3 and fixed values Ti/P = 0.3, Ti/MII = 1.0 in the temperature range of 1000-650 °C. Influence of the nature of alkali metal on interaction in multicomponent phosphate melts at molar ratios (Rb+K)/P = 1.0, Ti/P = 0.3, Ti/MII = 1.0 was found. Thus, the presence of potassium in the melts promotes the formation of langbeinite-related complex phosphates at the investigated ratios of components. The obtained phosphates were investigated by X-ray powder diffraction, infrared spectroscopy and optical microscopy.