Interaction of titanium dioxide with sodium fluoride and sodium carbonate

Using X-ray diffraction and gravimetry techniques, it is found that two pre viously described phases of the "NaTiO2F" compound actually comprise the mi xtures of NaF with Na(2)Ti(6)O(1)3 and Na2Ti3O7, which are formed during hy drolysis by water vapor. The degree of substitution is insignificant for th ese titanates. Five oxyfluoride phases are found in the Na2TiO3-TiO2-NaF co mposition region. Of these phases, there is a single equilibrium phase with the empirical formula 12NaF . 35Na(2)O . 53TiO(2). A noticeable cation con ductivity is found in this phase.