a$)$ Draw the Fe$-$C phase diagram between $200C$ and

$1200C$ on one axes and between $0\%$ and $0\mathrm{.}9t-\%$

carbon content on the other axes

b$)$ Which true metallurgical phases exist in the

fe$-$C$-$diagram? Do not Consider Cementite and

Pearlite

c$)$ What is the Carbon content of pearlite?

a$)$ The sketch shows partly stabilized zirconia $($PSZ$)$ with a crack.

Please state the phase structure for the two kinds of

particles $(1($dark$)$ and $2($grey$))$ as well as for the matrix $(3).$