A sheet of steel 2.5-mm thick has nitrogen atmospheres on both sides at 900"C and is permitted to achieve a steady-state diffusion condition. The diffusion coefficient for nitrogen in steel at this temperature is 1.85 x 10^-10 m^2/s, and the diffusion flux is found to be 1.0 x 10^-7 kg/m^2 s. Also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 2 kg/m^3. How far into the sheet from this high-pressure side will the concentration be 0.5 kg/m3? Assume a linear concentration profile.
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A sheet of steel 2.5-mm thick has nitrogen atmospheres on both sides at 900"C and is permitted to ac...
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