The subsolidus phase relations of the CaO-WO3-CuO system were investigated in air. The samples were equilibrated at 800 degrees C. Under these conditions, five binary oxide phases are stable: Ca2CuO3, Cu3WO6, CuWO4, CaWO4 and Ca3WO6. The pseudo-ternary section is characterised by 6 three-phase regions. No Ca equivalents to the Sr2CuWO6, Ba2CuWO6 or Sr8CuW3O18 phases were formed.
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- Crystal structure
- O system