Phase equilibria in the systems Fe 2O 3-WO 3 and FeVO 4-WO 3

Abstract

Diagrams of phase equilibria of the systems Fe 2O 3-WO 3 and FeVO 4-WO 3 have been constructed based on the results of DTA and X-ray phase powder diffraction. It was found that Fe 2WO 6 melts incongruently at 1100 ± 10°C yielding solid α-Fe 2O 3, and that the FeVO 4-WO 3 system is not a two-component system, even below the solidus line.