Abstract
The subsolidus phase relations of the ternary system ZnO–V 2O 5–WO 3 was investigated by means of X-ray diffraction (XRD) analysis. The phase relations had been constructed. Five binary compounds, five tie lines and six three-phase regions were determined in this system. The possible component regions for ZnO single crystal flux growth were discussed. The phase diagram of Zn 4V 2O 9–ZnWO 4 pseudo-binary system from 740 °C to 1300 °C was also determined through XRD and differential thermal analysis (DTA) methods. DTA results indicated this system was a eutectic system, and the eutectic temperature was 880 °C and eutectic point component was 78 mol% Zn 4V 2O 9 and 22 mol% ZnWO 4. The compounds composed of 78 mol% Zn 4V 2O 9 and 22 mol% ZnWO 4 might be suitable flux for ZnO crystal growth.
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