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A sheet of BCC iron 4.3-mm thick was exposed to a carburizing atmosphere on one side and a decarburizing atmosphere on the other side at 725°C. After having reached steady state, the iron was quickly cooled to room temperature. The carbon concentrations at the two surfaces were determined to be 0.010 and 0.0074 wt%. Calculate the diffusion coefficient if the diffusion flux is 1.4 × 10-8 kg/m2-s, given that the densities of carbon and iron are 2.25 and 7.87 g/cm3, respectively.
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A sheet of BCC iron 4.3-mm thick was exposed to a carburizing atmosphere on one side and a decarburi...
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