The concentration of zinc in a rod of brass is maintained at 10% at one end of a rod that is 0.01 m long; the other end is maintained at 0% by vaporizing the Zn as it arrives. At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod? Write down all your assumptions (hint: you will need to look up the density of copper. You do not need to account for the variation in density with alloy composition). Explain what the boundary conditions were.
The concentration of zinc in a rod of brass is maintained at 10% at one end of a rod that is 0.01 m long; the other end is maintained at 0% by…
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