10-51 Determine the phases present, the compo- sitions of each phase, and the amount of each phase in wt% for the following MgO- FeO ceramics at 2000°C: (a) MgO-25 wt% 3000 2000 S= (Mg. Fe)O 1000 MgO 20 40 60 80 FeO Weight percent FeO Figure 10-22 The equilibrium phase diagram for the MgO-FeO system. The dotted curve shows the nonequilibrium solidus. (For Problems 10-49, 10-51, 10-59, 10-60, 10-69, 10-73, and 10-79.) FeO; (b) MgO-45 wt% FeO; (c) MgO-60 wt% FeO; and (d) MgO-80 wt% FeO. (See Figure 10-22.) Temperature ('C)

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