* 2 binary (ABs, AC), 2 ternary (A_BC, AB Ca) intermediate compounds

a) Devise a ternary phase equilibrium diagram in 2 D with the given compounds below. Note that your diagram should be a correct equilateral triangle with correct stochiometry of the compounds

b)Draw Alkameyde Lines on your diagram (3 P) (indicate first the liquidus crystallization surfaces with a,b, c etc.). c) Define 2 eutectic and 2 peritectic points existing on your diagram (4P) d) Show some cooling arrows towards the invariant points which you have defined (2P) e) Draw the binary diagrams corresponding to the sides of your ternary diagram (6 P)

f)Apply phase rule on an invariant point, on a eutectic valley and on a liquidus surface of your diagram and comment