PROCESS PARAMETERS

NOTATION

VALUES

Surface area of the plate

A

29.4 × 10−4 m2

Volume of the plate

V

29.5 × 10−7 m3

Board thickness

x L

L = 0.001 m

Diffusion Rate

D o

2.3 × 10−5 m2/s*

C initial concentration

C ( x , 0 ) = C o , 0 < x < L

0.08% pC

C concentration on faces

C ( 0 , t ) = C 1 ; C ( L , t ) = C 2

0.10% pC

Diffusion temperature

T

1000˚C*

Activation energy

Qd

148 kJ/mol*

Constant of the gas

R

8.31 J/mol∙K*

Iron density range

ρ Fe γ

7.86 g/cm3**

Carbon density

ρ C

2.267 g/cm3***