Determine the phases present, the compositions of each phase, and the amount of each phase in mol% for the following NiO-MgO ceramics at 2400°C: (a) NiO- 30 mol% MgO; 

(b) NiO-45 mol% MgO;
(c) NiO-60 mol% MgO; and 

(d) NiO-85 mol% MgO.

 

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Temperature (°C) 2800 2600 2400 2200 L 2000, L+S S (Ni. Mg)0 I NiO 20 40 60 80 MgO Mole percent MgO (b)