5. Phase Diagrams (1) Write equilibrium reactions for: a) Eutectic b) Eutectoid c) Peritectic d) Peritectoid e) Congruent (2) The figure below shows the copper-antimony Cu-Sb phase diagram. All single-phase fields are labeled below (a, , 8, and CuSb). The CuSb phase exists at a single concentration of 50 wt % Sb marked by a green dotted line. Write the associated reaction for each transition labeled 1-6. 1100 1000 900 800 latt L Temperature, T (C) 700 600 500 400 Liquid CuSb 4 B+L B+L 6 2 2+8 300 0 Cu 2+E 10 10 20 20 5 30 CSb + L S+L 3 8 + E+B 40 50 60 70 70 wt % Sb 00 80 90 90 100 Sb