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18 Dec 2019
A 5 nm film of gold is vapor deposited onto a 1 mm thick silver substrate. This sample is annealed at a constant temperature of 1100K, at which the diffusivity of Au in Ag is 10^-11 cm²/sec. Gold and silver are completely miscible, are FCC metals, with a lattice constant of 0.4 nm (assume identical atomic volumes). How long does it take for the concentration of Au at the surface to drop to 10 atomic % ?
A 5 nm film of gold is vapor deposited onto a 1 mm thick silver substrate. This sample is annealed at a constant temperature of 1100K, at which the diffusivity of Au in Ag is 10^-11 cm²/sec. Gold and silver are completely miscible, are FCC metals, with a lattice constant of 0.4 nm (assume identical atomic volumes). How long does it take for the concentration of Au at the surface to drop to 10 atomic % ?
Trinidad TremblayLv2
31 Dec 2019
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