(a) Determine the phases present, the compositions of each phase, and the amount of each phase in...

Question:

(a) Determine the phases present, the compositions of each phase, and the amount of each phase in wt% for the following MgO-FeO ceramics at 2000 °C.
(i) MgO-25 wt% FeO;
(ii) MgO-45 wt% FeO;
(iii) MgO-60 wt% FeO;
(iv) MgO-80 wt% FeO.
(b) Consider an alloy of 65 wt% Cu and 35 wt% Al. Calculate the composition of the alloy in at%.