Using sio2-al2o3 phase diagram , with pt a at 2000c, and pt b 1600c above the line, and pt c 1560 below the line, pt d 1400 c or for that matter any tem below 1400 c
1) Outline the microstructure diagram for each point
2) Find out the phase present at each point
3) Find out the compositions of each phase at each point
4) Find out the weight of each phase at each pt if you start at 2000 c pt A , and 20 wt% Al2O3 with 100 kg of sio2-al2o3 mixture.