$1$ Estimate the total volume of pore, forming due to unbalanced fluxes for Ni$-$based superalloys taking into account

the difference in $Al$ and $Ni$ fluxes.

Chose the temperature $($except $1250C)$ and build the dependence of volume of the porks on time.

$3\mathrm{.}2$ Build the concentration profile for oxygen forming FeO on the surface of $Fe$ in assumption that only wustite forms

as an oxide.

Chose the temperature and build the dependence of layer thickness as a function of the annealing time taking into

account the Fe$-$O phase diagram $.$

Build the concentration profile in oxide layer for two different times.