material chemistry

(a) Phase diagrams may show the relationships between two or three substances, for example between the component elements in an alloy system. (i) Briefly describe how a component differs from a phase. (2 marks) (ii) Three (3) components A, B, and C of an alloy dissolve completely in liquid state but have no mutual solubility when they are solid. They do not form any chemical compounds. State the number of phases, and what compositions would appear in the solid state. (2 marks) (b) Figure 1 shows a FeC phase diagram up to 5 wt. \% C. Use the diagram to answer the following questions. Figure 1 (i) Identify the composition of C and the temperature at which eutectic reaction occurs. ( 2 marks) (ii) Sketch a schematic representation of the eutectic reaction. Label your diagram accordingly. (4 marks)