A 55 wt% Al2O3 - 45 wt% SiO2 ceramic tile weighing 1000 grams experiences two different...

Question

Question

A 55 wt% Al2O3 - 45 wt% SiO2 ceramic tile weighing 1000 grams experiences two different conditions during service:

held at 1400°C for months and cooled very slowly to room temperature to maintain phase equilibrium

held at 1650 C for months and then quenched very rapidly (assume instantaneously) to room temperature. Given the enclosed phase diagram, answer the following questions:

Service Condition

Phases present at Room Temperature

Composition of

Each Phase

Amount of Each

Phase (in grams)

(a)

(b)

engineering Mechanical-Engineering

Answer 1

Answer #1

Answer 2

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