Question: The Diffusion coefficient for C in Fe is 8 times 1 0 ^ ( - 1 5 ) m ( 2 ) / (

The Diffusion coefficient for C in Fe is 8\times 10^(-15)m(2)/(s) at 500 C and 1\times 10-12m(2)/(s)0.1%C content1%C at the top surface. The case
hardening process is performed at 750 C to give 0.288%C at a depth of 0.4 mm . How long should
this diffusion step be in hours?
The Diffusion coefficient for C in Fe is 8 \

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